Deuteronomy 5:2
"The LORD our God made a covenant with us in Horeb."
Cross References (ranked by relevance)
Deuteronomy 4:23
Take heed unto yourselves, lest ye forget the covenant of the LORD your God, which he made with you, and make you a graven image, or the likeness of any thing, which the LORD thy God hath forbidden thee.
Exodus 24:8
And Moses took the blood, and sprinkled it on the people, and said, Behold the blood of the covenant, which the LORD hath made with you concerning all these words.