Deuteronomy 7:9

9 Know therefore that the Lord your God is God, the faithful God who maintains covenant loyalty with those who love him and keep his commandments, to a thousand generations,

Deuteronomy 7:9 Meaning and Commentary

Ver. 9 Know therefore that the Lord thy God, he is God
The only true and living God, and not the idols of the Gentiles, who are false and lifeless ones, and therefore not the proper objects of adoration:

the faithful God, which keepeth covenant and mercy;
as appeared by fulfilling the promise made to their fathers, in bringing them out of Egypt, and now them to the borders of the land of Canaan given them for an inheritance:

with them that love him, and keep his commandments, to a thousand
generations;
see ( Exodus 20:6 ) which are not the causes or conditions of his covenant and mercy, nor of his keeping them, but descriptive of the persons that enjoy the benefit thereof.

Deuteronomy 7:9 In-Context

7 It was not because you were more numerous than any other people that the Lord set his heart on you and chose you—for you were the fewest of all peoples.

8 It was because the Lord loved you and kept the oath that he swore to your ancestors, that the Lord has brought you out with a mighty hand, and redeemed you from the house of slavery, from the hand of Pharaoh king of Egypt.

9 Know therefore that the Lord your God is God, the faithful God who maintains covenant loyalty with those who love him and keep his commandments, to a thousand generations,

10 and who repays in their own person those who reject him. He does not delay but repays in their own person those who reject him.

11 Therefore, observe diligently the commandment—the statutes and the ordinances—that I am commanding you today.