Deuteronomy 10:16 KJV
Circumcise therefore the foreskin of your heart, and be no more stiffnecked.
Deuteronomy 10:14–18 KJV Chapter Context
14
Behold, the heaven and the heaven of heavens is the LORD’s thy God, the earth also, with all that therein is.
15
Only the LORD had a delight in thy fathers to love them, and he chose their seed after them, even you above all people, as it is this day.
16
Circumcise therefore the foreskin of your heart, and be no more stiffnecked.
17
For the LORD your God is God of gods, and Lord of lords, a great God, a mighty, and a terrible, which regardeth not persons, nor taketh reward:
18
He doth execute the judgment of the fatherless and widow, and loveth the stranger, in giving him food and raiment.