'Circumcise' in the Bible

Circumcise therefore the foreskin of your heart, and be no more stiff-necked.

Yahweh your God will circumcise your heart, and the heart of your seed, to love Yahweh your God with all your heart, and with all your soul, that you may live.

At that time, Yahweh said to Joshua, "Make flint knives, and circumcise again the children of Israel the second time."

Circumcise yourselves to Yahweh, and take away the foreskins of your heart, you men of Judah and inhabitants of Jerusalem; lest my wrath go forth like fire, and burn so that none can quench it, because of the evil of your doings.