Psalms 78:7

“That they might set their hope in God, etc.] And not in the creature, nor in any creature enjoyment; (see <183124>Job 31:24), the Lord is the only proper object of hope and confidence; Christ, who is truly God, is the hope of his people, and in him they place it, as they have great reason to do; since with him there is mercy, the mercy of God is proclaimed in him; and with him there is redemption, which includes the blessings of peace, pardon, and righteousness; and a plenteous one, a redemption from all sin; and it is the Gospel which points out these things in Christ, and encourages a firm and settled hope and trust in him: and this shows that that is meant by the law and testimony; since…”

“That they might set their hope in God - That they might place confidence in God; that they might maintain their allegiance to him. The object was to give such exhibitions of his character and government as to inspire just confidence in him, or to lead people to trust in him; and not to trust in idols and false gods. All the laws which God has ordained are such as are suited to inspire confidence in him as a just and righteous ruler; and all his dealings with mankind, when they are properly - that is, “really” - understood, will be found to be adapted to the same end. And not forget the works of God - His doings. The word here does not refer to his “works” considered as the works of creation,…”

“78:7-8 God holds each generation responsible for its own response, which should be to maintain faith and hope (see 9:18; 27:14) and avoid being stubborn, rebellious, and unfaithful (see Deut 9:6-7; 10:16; 30:6; 31:27).”

“set: Psa 40:4, Psa 62:5, Psa 91:14, Psa 130:6, Psa 130:7, Psa 146:5; Jer 17:7, Jer 17:8; Pe1 1:21 not forget: Psa 77:10-12, Psa 103:2, Psa 105:5; Exo 12:24-27; Deu 4:9, Deu 7:18, Deu 7:19, Deu 8:2, Deu 8:11; Est 9:27, Est 9:28; Co1 11:24 keep: Deu 5:29; Joh 14:21-24; Jo1 3:22-24, Jo1 5:3; Rev 14:12 Psalms 78:8”