'Circumcise' in the Bible

And ye shall circumcise the flesh of your foreskin; and that shall be a sign of the covenant between me and you.

Circumcise then the foreskin of your heart, and stiffen your neck no more.

And Jehovah thy God will circumcise thy heart, and the heart of thy seed, to love Jehovah thy God with all thy heart and with all thy soul, that thou mayest live.

At that time Jehovah said to Joshua, Make thee stone-knives, and circumcise again the children of Israel the second time.

Circumcise yourselves for Jehovah, and take away the foreskins of your heart, ye men of Judah and inhabitants of Jerusalem; lest my fury come forth like fire and burn, and there be none to quench it, because of the evil of your doings.