Psalms 105:8

“He hath remembered his covenant for ever, etc.] Another argument of praise taken from the covenant of grace, in which he is our God, and of which he is ever mindful; he remembers his covenant ones, whom he perfectly knows, and never forgets them; he remembers his covenant promises to them, and allows them to put him in remembrance of them; he has respect unto his covenant, and the blessings of it, and bestows them on his people; gives them the sure mercies of David; and he remembers his love, which is the source and spring of all. The word which he commanded to a thousand generations; that which is properly a covenant with Christ our head on our account, is a word of promise to us; a promise…”

“He hath remembered his covenant forever - That is, God has had it constantly in remembrance, or always. Compare the notes at Luke 1:72. Though the covenant was made long since; though many generations of people have passed by; though great changes have occurred; though many calamities have come upon the nations, yet his ancient covenant and promise have never been forgotten. All his promises have been fulfilled; all ever will be. The “covenant” here referred to is that which was made with Abraham, and through him with the Hebrew people. The word which he commanded - The thing which he commanded; that is, all which he ordained and appointed. To a thousand generations - Very many generations;…”

“Remembered - So as to perform it. The word - The promise. Commanded - Established. Thousand generations - To all generations. Psalms 105:9”

“105:8 The covenant is the Lord’s irrevocable oath to be the Father of Abraham and his descendants (see Gen 12:1-9; 15:1-21).”

“He hath remembered: Psa 105:42, Psa 111:5, Psa 111:9; Ch1 16:15; Neh 1:5; Dan 9:4; Luk 1:72-74 a thousand: Deu 7:9 Psalms 105:9”