Deuteronomy 29:12-15

so that you may enter into the sworn covenant of the LORD your God, which the LORD your God is making with you today, that he may establish you today as his people, and that he may be your God, as he promised you, and as he swore to your fathers, to Abraham, to Isaac, and to Jacob. It is not with you alone that I am making this sworn covenant, but with whoever is standing here with us today before the LORD our God, and with whoever is not here with us today.