Ver. 3. The Lord made not this covenant with our fathers— According to Houbigant, the word fathers here signifies, not their immediate predecessors, but their remote progenitors, Abraham, Isaac, and Jacob, who were not the inheritors of the land of Canaan. Moses considers not the covenant itself, which God indeed made with the patriarchs, but the effect of that covenant; which effect pertained not to their fathers, but to them: as much as to say, he promised indeed to them the land of Canaan, as well as to us; but he gave them not such statutes and ordinances as he hath given to us this day. Others say, that the words may be interpreted, according to the Hebrew idiom, The Lord made this covenant, not with our fathers only, but with us; as Genesis 32:28. Thy name shall be called no more Jacob, but Israel; i.e. not only Jacob, but Israel; or, Israel, preferably to Jacob.
Related Commentaries of Deuteronomy 5:3
Deuteronomy 5:3
3 The LORD made not this covenant with our fathers, but with us, even us, who are all of us here alive this day.