Jeremiah 22:16
16. was not this to know me—namely, to show by deeds that one knows God's will, as was the case with Josiah (compare Joh 13:17; contrast Tit 1:16).
Hosea 6:3
3. know, if we follow on to know the Lord—The result of His recovered favor (Ho 6:2) will be onward growth in saving knowledge of God, as the result of perseverance in following after Him (Ps 63:8; Isa 54:13). "Then" implies the consequence of the revival in Ho 6:2. The "if" is not so much conditional, as expressive of the means which God's grace will sanctify to the full enlightenment of Israel in the knowledge of Him. As want of "knowledge of God" has been the source of all evils (Ho 4:1; 5:4), so the knowledge of Him will bring with it all blessings; yea, it is "life" (Joh 17:3). This knowledge is practice, not mere theory (Jer 22:15, 16). Theology is life, not science; realities, not words. This onward progress is illustrated by the light of "morning" increasing more and more "unto the perfect day" (Pr 4:18).
prepared—"is sure," literally, "fixed," ordered in His everlasting purposes of love to His covenant-people. Compare "prepared of God" (Ge 41:32, Margin; Re 12:6). Jehovah shall surely come to the relief of His people after their dark night of calamity. as the morning— (2Sa 23:4). as the rain . . . latter . . . former— (Job 29:23; Joe 2:23). First, "the rain" generally is mentioned; then the two rains (De 11:14) which caused the fertility of Palestine, and the absence of which was accounted the greatest calamity: "the latter rain" which falls in the latter half of February, and during March and April, just before the harvest whence it takes its name, from a root meaning "to gather"; and "the former rain," literally, "the darting rain," from the middle of October to the middle of December. As the rain fertilizes the otherwise barren land, so God's favor will restore Israel long nationally lifeless.1 John 2:3-4
3. hereby—Greek, "in this." "It is herein," and herein only, that we know (present tense) that we have knowledge of (perfect tense, once-for-all obtained and continuing knowledge of) Him" (1Jo 2:4, 13, 14). Tokens whereby to discern grace are frequently given in this Epistle. The Gnostics, by the Spirit's prescient forewarning, are refuted, who boasted of knowledge, but set aside obedience. "Know Him," namely, as "the righteous" (1Jo 2:1, 29); our "Advocate and Intercessor."
keep—John's favorite word, instead of "do," literally, "watch," "guard," and "keep safe" as a precious thing; observing so as to keep. So Christ Himself. Not faultless conformity, but hearty acceptance of, and willing subjection to, God's whole revealed will, is meant. commandments—injunctions of faith, love, and obedience. John never uses "the law" to express the rule of Christian obedience: he uses it as the Mosaic law.4. I know—Greek, "I have knowledge of (perfect) Him." Compare with this verse 1Jo 1:8.