Deuteronomy 7:12

7:12 It shall happen, because you listen to these ordinances, and keep and do them, that Yahweh your God will keep with you the covenant and the loving kindness which he swore to your fathers:
-World English Bible

Other Translation

7:12 Wherefore it shall come to pass, if ye hearken to these judgments, and keep, and do them, that the LORD thy God shall keep unto thee the covenant and the mercy which he sware unto thy fathers:
-King James Version