Scripture
Deuteronomy 10:16 (NRSV)
Circumcise, then, the foreskin of your heart, and do not be stubborn any longer.
Consider
This verse is situated in an important Old Testament passage in which God describes the essence of his relationship with his people. “You belong to Me,” God says in effect. “I chose you. Physical circumcision distinguishes you from the world, but you must circumcise your hearts as well. You must ‘cut off’ useless and counterproductive practices of the world and instead act in ways that identify you as mine.”