THE COVENANT AT MOUNT SINAI WAS MADE WITH THOSE WHO WERE THERE AND THOSE WHO WERE NOT THERE

Deuteronomy 29:12 That you should enter into covenant with the LORD your God and into his oath which the LORD your God makes with you this day:

Deuteronomy 29:13 That he may establish you to day for a people unto himself and that he may be unto you a God as he has said unto you and as he has sworn unto your fathers, to Abraham, to Isaac, and to Jacob.