18 As a mad man who casteth firebrands, arrows, and death,   19 So is the man that deceiveth his neighbour, and saith, Am not I in sport?

      See here, 1. How mischievous those are that make no scruple of deceiving their neighbours; they are as madmen that cast firebrands, arrows, and death, so much hurt may they do by their deceits. They value themselves upon it as polite cunning men, but really they are as madmen. There is not a greater madness in the world than a wilful sin. It is not only the passionate furious man, but the malicious deceitful man, that is a madman; he does in effect cast fire-brands, arrows, and death; he does more mischief than he can imagine. Fraud and falsehood burn like fire-brands, kill, even at a distance, like arrows. 2. See how frivolous the excuse is which men commonly make for the mischief they do, that they did it in a jest; with this they think to turn it off when they are reproved for it, Am not I in sport? But it will prove dangerous playing with fire and jesting with edge-tools. Not that those are to be commended who are captious, and can take no jest (those that themselves are wise must suffer fools, 2 Cor. xi. 19, 20), but those are certainly to be condemned who are any way abusive to their neighbours, impose upon their credulity, cheat them in their bargains with them, tell lies to them or tell lies of them, give them ill language, or sully their reputation, and then think to excuse it by saying that they did but jest. Am not I in sport? He that sins in just must repent in earnest, or his sin will be his ruin. Truth is too valuable a thing to be sold for a jest, and so is the reputation of our neighbour. By lying and slandering in jest men learn themselves, and teach others, to lie and slander in earnest; and a false report, raised in mirth, may be spread in malice; besides, if a man may tell a lie to make himself merry, why not to make himself rich, and so truth quite perishes, and men teach their tongues to tell lies, Jer. ix. 5. If men would consider that a lie comes from the devil, and brings to hell-fire, surely that would spoil the sport of it; it is casting arrows and death to themselves.

      24 He that hateth dissembleth with his lips, and layeth up deceit within him;   25 When he speaketh fair, believe him not: for there are seven abominations in his heart.   26 Whose hatred is covered by deceit, his wickedness shall be shewed before the whole congregation.

      There is cause to complain, not only of the want of sincerity in men's profession of friendship, and that they do not love so well as they pretend nor will serve their friends so much as they promise, but, which is much worse, of wicked designs in the profession of friendship, and the making of it subservient to the most malicious intentions. This is here spoken of as a common thing (v. 24): He that hates his neighbour, and is contriving to do him a mischief, yet dissembles with his lips, professes to have a respect for him and to be ready to serve him, talks kindly with him, as Cain with Abel, asks, Art thou in health, my brother? as Joab to Amasa, that his malice may not be suspected and guarded against, and so he may have the fairer opportunity to execute the purposes of it, this man lays up deceit within him, that is, he keeps in his mind the mischief he intends to do his neighbour till he catches him at an advantage. This is malice which has no less of the subtlety than it has of the venom of the old serpent in it. Now, as to this matter, we are here cautioned, 1. Not to be so foolish as to suffer ourselves to be imposed upon by the pretensions of friendship. Remember to distrust when a man speaks fair; be not too forward to believe him unless you know him well, for it is possible there may be seven abominations in his heart, a great many projects of mischief against you, which he is labouring so industriously to conceal with his fair speech. Satan is an enemy that hates us, and yet in his temptations speaks fair, as he did to Eve, but it is madness to give credit to him, for there are seven abominations in his heart; seven other spirits does one unclean spirit bring more wicked than himself. 2. Not to be so wicked as to impose upon any with a profession of friendship; for, though the fraud may be carried on plausibly awhile, it will be brought to light, v. 26. He whose hatred is covered by deceit will one time or other be discovered, and his wickedness shown, to his shame and confusion, before the whole congregation; and nothing will do more to make a man odious to all companies. Love (says one) is the best armour, but the worst cloak, and will serve dissemblers as the disguise which Ahab put on and perished in.

      28 A lying tongue hateth those that are afflicted by it; and a flattering mouth worketh ruin.

      There are two sorts of lies equally detestable:-- 1. A slandering lie, which avowedly hates those it is spoken of: A lying tongue hates those that are afflicted by it; it afflicts them by calumnies and reproaches because it hates them, and can thus smite them secretly where they are without defence; and it hates them because it has afflicted them and made them its enemies. The mischief of this is open and obvious; it afflicts, it hates, and owns it, and every body sees it. 2. A flattering lie, which secretly works the ruin of those it is spoken to. In the former the mischief is plain, and men guard against it as well as they can, but in this it is little suspected, and men betray themselves by being credulous of their own praises and the compliments that are passed upon them. A wise man therefore will be more afraid of a flatterer that kisses and kills than of a slanderer that proclaims war.