Brotherly love ( φιλαδελφια ). Late word from  φιλαδελφος (1Pe 3:8). See 1Th 4:9. It is always in order in a church.

To show love unto strangers ( της φιλοξενιας ). Old word for hospitality, from  φιλοξενος (1Ti 3:2), in N.T. only here and Ro 12:3. In genitive case with  επιλανθανεσθε (present middle imperative, cf. Heb 6:10).

Have entertained angels unawares ( ελαθον ξενισαντες αγγελους ). Second aorist active indicative of  λανθανω, old verb to escape notice and first aorist active participle of  ξενιζω, old verb to entertain a guest ( ξενος, stranger), according to a classic idiom seen with  λανθανω, τυγχανω, φθανω, by which the chief idea is expressed by the participle (supplementary participle), here meaning, "some escaped notice when entertaining angels." The reference is to Ge 18; 19 (Abraham and Sarah did this very thing).

As bound with them ( ως συνδεδεμενο ). Perfect passive participle of  συνδεω, old verb, here only in N.T. For sympathy with prisoners see 10:34.

As being yourselves also in the body ( ως κα αυτο οντες εν σωματ ). And so subject to evil treatment. See 11:37 for  κακουχεω and 11:25 for  συνκακουχεω.

Let marriage be ( ο γαμος ). No verb in the Greek. The copula can be supplied either  εστιν (is) or  εστω (let be, imperative).

Had in honour ( τιμιος ). Old adjective from  τιμη (honour) as in Ac 5:34.  Γαμος elsewhere in the N.T., means the wedding or wedding feast (Mt 22:29; Joh 2:1).

Undefiled ( αμιαντος ). Old compound word (alpha privative and verbal of  μιαινω, to defile), already in Heb 7:26.  Μιαινω την κοιτην is a common expression for adultery.

Fornicators ( πορνους ). Unmarried and impure.

Adulterers ( μοιχους ). Impure married persons. God will judge both classes whether men do or not.

Be ye free from the love of money ( αφιλαργυρος ο τροπος ). No copula, but supply  εστο: "Let your manner of life ( τροπος, way, Mt 23:37), be without love of money" ( αφιλαργυρος, double compound), once found only in the N.T., here and 1Ti 3:3, but now several times--or the adverb  αφιλαργυρως --in papyri and inscriptions (Deissmann, Light, etc., pp. 85f.). Alpha privative and  φιλος and  αργυρος. The N.T. is full of the peril of money on the character as modern life is also.

Content with such things as ye have ( αρκουμενο τοις παρουσιν ). Present passive participle of  αρκεω, to suffice, to be content as in Lu 3:14. Cf.  αυταρκης in Php 4:11. Here in the nominative plural with no substantive or pronoun (anacoluthon, as in 2Co 1:7) or the participle used as a principal verb as in Ro 12:16. "Contented with the present things" ( τοις παρουσιν, associative instrumental case of  τα παροντα, present active neuter plural participle of  παρειμ, to be present or on hand).

For himself hath said ( αυτος γαρ ειρηκεν ). God himself as in Ac 20:33 of Christ. Perfect active indicative as in 1:13; 4:3f.; 10:9. The quotation is a free paraphrase of Ge 28:15; De 31:8; Jos 1:5; 1Ch 28:20. Philo (de Confus. Ling. 32) has it in this form, "a popular paraphrase" (Moffatt). Note the five negatives strengthening each other ( ου μη with the second aorist active subjunctive  ανω from  ανιημ, to relate, as in Ac 16:26;  ουδ' ου μη with second aorist active subjunctive  εγκαταλιπω from  εγκαταλειπω, to leave behind, as in Mt 27:46; 2Ti 4:10). A noble promise in times of depression.

So that we say ( ωστε ημας λεγειν ). The usual construction (the infinitive) with  ωστε in the Koine even when the idea is result instead of purpose. The accusative  ημας is that of general reference.

With good courage ( θαρρουντας ). Present active participle of  θαρρεω (Ionic and early Attic  θαρσεω, Mt 9:2) as in 2Co 5:6,8. The accusative agreeing with  ημας, "being of good courage." The quotation is from Ps 118:6.

My helper ( εμο βοηθος ). "Helper to me" (ethical dative  εμο ).  Βοηθος is old adjective (cf.  βοηθεω, to help, 2:18), often in LXX as substantive, here only in N.T.

I will not fear ( ου φοβηθησομα ). Volitive first future passive of  φοβεομα.

Remember ( μνημονευετε ). Present active imperative of  μνημονευω, old verb to be mindful of (from  μνημων, mindful) with genitive (Joh 15:20) or accusative (Mt 16:9). "Keep in mind." Cf. 11:22.

Them that had the rule over you ( των ηγουμενων υμων ). Present middle participle of  ηγεομα with genitive of the person ( υμων ) as in verses 17,24. The author reminds them of the founders of their church in addition to the long list of heroes in chapter Ac 11. See a like exhortation to respect and follow their leaders in 1Th 5:12f. Few lessons are harder for the average Christian to learn, viz., good following.

The word of God ( τον λογον του θεου ). The preaching of these early disciples, apostles, and prophets (1Co 1:17).

And considering the issue of their life ( ων αναθεωρουντες την εκβασιν της αναστροφης ). No "and" in the Greek, but the relative  ων (whose) in the genitive case after  αναστροφης, "considering the issue of whose life." Present active participle of  αναθεωρεω, late compound, to look up a subject, to investigate, to observe accurately, in N.T. only here and Ac 17:23.  Εκβασις is an old word from  εκβαινω, to go out (Heb 11:15, here only in N.T.), originally way out (1Co 10:13), but here (only other N.T. example) in sense of end or issue as in several papyri examples (Moulton and Milligan, Vocabulary).

Imitate their faith ( μιμεισθε την πιστιν ). Present middle imperative of  μιμεομα, old verb (from  μιμος, actor, mimic), in N.T. only here, 2Th 3:7,9; 3Jo 1:11. Keep on imitating the faith of the leaders.

Jesus Christ is the same yesterday and today, yea and forever ( Ιησους Χριστος εχθες κα σημερον ο αυτος κα εις τους αιωνας ). There is no copula in the Greek. Vincent insists that  εστιν be supplied between  Ιησους and  Χριστος, "Jesus is Christ," but it more naturally comes after  Χριστος as the Revised Version has it. The old adverb  εχθες is rare in the N.T. (Joh 4:52; Ac 7:28; Heb 13:8). Here it refers to the days of Christ's flesh (2:3; 5:7) and to the recent work of the leaders (13:7). "Today" ( σημερον, 3:15) is the crisis which confronts them. "Forever" ( εις τους αιωνας ) is eternity as well as the Greek can say it. Jesus Christ is eternally "the same" (1:12) and the revelation of God in him (1:1f.) is final and never to be superseded or supplemented (Moffatt). Hence the peril of apostasy from the only hope of man.

Be not carried away ( μη παραφερεσθε ). Prohibition with  μη and present passive imperative of  παραφερω, old verb to lead along (Jude 1:12), to carry past (Mr 14:36), to lead astray as here.

By divers and strange teachings ( διδαχαις ποικιλαις κα ξεναις ). For  ποικιλος (many coloured) see 2:4.  Ξενος for guest we have had in 11:13, but here as adjective meaning unheard of (1Pe 4:12) as in older Greek also. The new is not always wrong any more than the old is always right (Mt 13:52). But the air was already full of new and strange teachings that fascinated many by their very novelty. The warning here is always needed. Cf. Ga 1:6-9; 2Ti 3:16.

That the heart be established by grace ( χαριτ βεβαιουσθα την καρδιαν ). Present passive infinitive of  βεβαιοω (from  βαινω ) to make stable with the instrumental case  χαριτ (by grace) and the accusative of general reference ( την καρδιαν ). How true it is that in the atmosphere of so many windy theories only the heart is stable that has an experience of God's grace in Christ.

That occupied themselves ( ο περιπατουντες ). "That walked" in the ritualistic Jewish rules about meats.

Were not profited ( ουκ ωφεληθησαν ). First aorist passive indicative of  ωφελεω, to help. Mere Jewish ceremonialism and ritualism failed to build up the spiritual life. It was sheer folly to give up Christ for Pharisaism or for Moses.

We have an altar ( εχομεν θυσιαστηριον ). We Christians have a spiritual altar ( θυσιαστηριον ), not a literal one (7:13). This metaphor is carried out.

Whereof ( εξ ου ). Our spiritual altar.

The tabernacle ( τη σκηνη ). Dative case with  λατρευοντες (serve),  σκηνη being used for "the whole ceremonial economy" (Vincent) of Judaism.

Of those beasts whose blood ( ων ζωων το αιμα τουτων ). The antecedent ( ζωων ) of  ων is here incorporated and attracted into the case of the relative, "the blood of which beasts" and then  τουτων (genitive demonstrative) is added, "of these." Cf. Le 4:12f.,21; 16:27 for the Old Testament ritual in such cases. This is the only example in the LXX or N.T. where  ζωων (animal) is used of a sacrificial victim. See also Ex 29:14; 32:26f. for burning without the camp.

Wherefore Jesus also ( διο κα Ιησους ). The parallel is drawn between the O.T. ritual and the better sacrifice of Jesus already discussed (9:13-10:18). The purpose of Jesus is shown ( ινα αγιαση,  ινα and the first aorist active subjunctive of  αγιαζω, to sanctify), the means employed ( δια του ιδιου αιματος, by his own blood), the place of his suffering ( επαθεν, as in 5:8) is also given ( εξω της πυλης, outside the gate, implied in Joh 19:17) which phrase corresponds to "outside the camp" of verse 11.

Let us therefore go forth to him ( τοινυν εξερχωμεθα προς αυτον ). Inferential particle ( τοι, νυν ), usually post-positive (Lu 20:25; 1Co 9:26) only N.T. examples. Present middle volitive subjunctive of  εξερχομα. "Let us keep on going out there to him." If a separation has to come between Judaism and Christianity, let us give up Judaism, and go out to Christ "outside the camp" and take our stand with him there on Golgotha, "bearing his reproach ( τον ονειδισμον αυτου φεροντες ) as Jesus himself endured the Cross despising the shame (12:2) and as Moses accepted "the reproach of the Messiah" (11:26) in his day. The only decent place for the follower of Christ is beside the Cross of Christ with the reproach and the power (Ro 8:1f.) in it. This is the great passionate plea of the whole Epistle.

An abiding city ( μενουσαν πολιν ). Jerusalem has lost its charm for followers of Christ. Vincent rightly argues that the Epistle must have been written before the destruction of Jerusalem else a reference to that event could hardly have been avoided here. We are now where Abraham was once (11:10).

Through him ( δι' αυτου ). That is Jesus. He is our Priest and Sacrifice, the only efficient and sufficient one.

Let us offer up ( αναφερωμεν ). Present active volitive subjunctive of  αναφερω, "let us keep on offering up." Jesus is living and let us go to him.

A sacrifice of praise ( θυσιαν αινεσεως ). This phrase occurs in Le 7:12; Ps 54:8. The word  αινεσις (from  αινεω, to praise), common in LXX, is only here in N.T.

The fruit of lips ( καρπον χειλεων ). In apposition ( τουτ 'εστιν ) and explanation of  θυσιαν αινεσεως. Cf. Ho 14:3; Isa 57:19.

Which made confession to his name ( ομολογουντων τω ονοματ αυτου ). This use of  ομολογεω with the dative in the sense of praise like  εξομολογεω is unique, though the papyri furnish examples in the sense of gratitude (Moulton and Milligan, Vocabulary).

To do good ( της ευποιιας ). Genitive case. Late compound from  ευποιος ( ευποιεω ), common in Epictetus, but here only in N.T., a doing good.

To communicate ( κοινωνιας ). Genitive case. See 2Co 9:13 for use for contribution, beneficence. Moffatt notes that the three great definitions of worship and religious service in the N.T. (here, Ro 12:1f.; Jas 1:27) are all inward and ethical.

Forget not ( μη επιλανθανεσθε ). Prohibition with  μη and the present middle imperative of  επιλανθανω (6:10; 13:2). Here with the genitive case.

Is well pleased ( ευαρεστειτα ). Present passive indicative of  ευαρεστεω (Heb 11:5). With the associative instrumental case  θυσιαις (sacrifices).

Obey ( πειθεσθε ). Present middle imperative of  πειθω with dative case.

Submit ( υπεικετε ). Present active imperative of  υπεικω, old compound to yield under, to give up. Here only in N.T.

They watch ( αγρυπνουσιν ). Present active indicative of  αγρυπνεω old verb (from  αγρεω, to search,  υπνος, sleep), to seek after sleep, to be sleepless, be watchful (Mr 13:33).

As they that shall give account ( ως λογον αποδωσοντες ). Regular Greek idiom with  ως and the future participle. For  λογον αποδιδωμ, to render account, see Mt 12:36. These leaders as good shepherds recognize keenly their responsibility for the welfare of the flock.

And not with grief ( κα μη στεναζοντες ). "And not groaning" (cf. Ro 8:23).

Unprofitable ( αλυσιτελες ). Old double compound adjective (alpha privative and  λυσιτελης and this from  λυω, to pay, and  τελος, tax, useful or profitable as Lu 17:2), not profitable, not advantageous, by litotes, hurtful, pernicious. Common rhetorical litotes, here only in N.T.

Honestly ( καλως ). Nobly, honourably. Apparently the writer is conscious that unworthy motives have been attributed to him. Cf. Paul in 1Th 2:18; 2Co 1:11f.,17f.

That I may be restored to you the sooner ( ινα ταχειον αποκατασταθω υμιν ). Purpose clause with  ινα and the first aorist passive subjunctive of  αποκαθιστημ, an old double compound as in Mt 12:13. What is meant by  ταχειον (Joh 13:27; 20:4) we do not know, possibly sickness. See verse 23 also for  ταχειον.

The God of peace ( ο θεος της ειρηνης ). God is the author and giver of peace, a Pauline phrase (6 times) as in 1Th 5:23.

Who brought again from the dead ( ο αναγαγων εκ νεκρων ). Second aorist active articular participle of  αναγω (cf. Ro 10:7), the only direct mention of the resurrection of Jesus in the Epistle, though implied often (1:3, etc.).

That great shepherd of the sheep ( τον ποιμενα των προβατων τον μεγαν ). This phrase occurs in Isa 63:11 except  τον μεγαν which the author adds as in 4:14; 10:21. So here, "the shepherd of the sheep the great one."

With the blood of the eternal covenant ( εν αιματ διαθηκης αιωνιου ). This language is from Zec 9:11. The language reminds us of Christ's own words in Mr 14:24 (Mt 26:28; Lu 22:20; 1Co 11:25) about "my blood of the covenant."

Make you perfect ( καταρτισα ). First aorist active optative of  καταρτιζω, to equip, as in 10:5. A wish for the future. See 1Co 1:10; 2Co 13:11; 2Ti 3:17.

Working in us ( ποιων εν εμιν ). "Doing in us." Some MSS. read "in you."

Well-pleasing ( ευαρεστον ). Compound adjective ( ευ, αρεστος ). Usually with the dative (Ro 12:2), here with  ενωπιον αυτου more like the Hebrew. This is one of the noblest doxologies in the N.T.

Bear with ( ανεχεσθε ). Present middle imperative (some MSS. have  ανεχεσθα, infinitive) of  ανεχω with the ablative, "hold yourselves back from" as in Col 3:13.

The word of exhortation ( του λογου της παρακλησεως ). His description of the entire Epistle. It certainly is that, a powerful appeal in fact.

I have written ( επεστειλα ). First aorist active indicative (epistolary aorist) of  επιστελλω, old word to send a letter ( επιστολη ) as in Ac 15:20.

In few words ( δια βραχεων ). Common Greek idiom, here only in N.T. (from  βραχυς, brief, short). Cf.  δι' ολιγων εγραψα in 1Pe 5:12.

Hath been set at liberty ( απολελυμενον ). Perfect passive participle of  απολυω, to set free, in indirect discourse after  γινωσκετε. Possibly from prison if he came to Rome at Paul's request (2Ti 4:11,21).

Shortly ( ταχειον ). Same comparative as in verse 19, "sooner" than I expect (?).

They of Italy ( ο απο της Ιταλιας ). Either those with the author in Italy or those who have come from Italy to the author outside of Italy.