Psalms 4:8

“Thou hast brought a vine out of Egypt, etc.] The house of Israel, who are like unto a vine, as the Targum paraphrases it; and to a vine or vineyard are they often compared; (see <230501>Isaiah 5:1,7 27:2,3) (<240221>Jeremiah 2:21 <281001>Hosea 10:1). These were in Egypt awhile, where they were grievously oppressed and trampled upon; and yet the more they were afflicted, the more they grew and multiplied; and from hence the Lord brought them in due time, with a mighty hand and outstretched arm; he caused them to go out; the word f1160 used fitly expresses their journeyings from thence, and through the wilderness; they were a type of the church of Christ, and special people of God, who also…”

“both lay me down, &c.--or, will lie down at once, and sleep in sure confidence and quiet repose (Psa 3:5). Next: Psalms Chapter 5”

“I will both lay me down in peace, and sleep - The word “both” here means “at the same time;” that is, I will alike be in peace, and I will lie down and will sleep; I will have a mind at peace (or, in tranquility) when I lie down, and will sleep calmly. This is said in view of his confidence in God, and of his belief that God would preserve him. He had put his trust in him; he had sought his happiness in him, and now he felt assured that he had nothing to fear, and, at peace with God, he would lie down and compose himself to rest. This is the counterpart of what is said in Psalms 3:5. There he says in the morning, that, though surrounded by fear, he “had” been permitted to lie calmly down and…”

“In peace - In tranquility of mind, resting securely upon God's promises. Next: Psalms Chapter 5”

“4:8 Peace comes from God’s blessing and protection (4:6; see 37:11).”

“I will: Psa 3:5, Psa 16:8; Job 11:18, Job 11:19; Pro 3:24; Th1 4:13, Th1 4:14, Th1 5:10; Rev 14:13 for: Lev 25:18, Lev 25:19, Lev 26:5; Deu 12:10, Deu 33:27-29; Eze 34:25; Hos 2:18; Rom 8:35-39 Next: Psalms Chapter 5”

“(Heb.: 4:9) Thus then he lies down to sleep, cheerfully and peacefully. The hymn closes as it began with a three line verse. יחדּוּ (lit., in its unions = collectively, Olshausen, 135, c, like כּלּו altogether, בּעתּו at the right time) is by no means unemphatic; nor is it so in Psa 19:10 where it means "all together, without exception." With synonymous verbs it denotes the combination of that which they imply, as Isa 42:14. It is similar in Psa 141:10 where it expresses the coincidence of the fall of his enemies and the escape of the persecuted one. So here: he wishes to go to sleep and also at once he falls asleep (ואישׁן in a likewise cohortative sense = ואישׁנה). His God makes him to…”