'Circumcise' in the Bible

And ye shall circumcise the flesh of your foreskin; and it shall be a token of the covenant betwixt me and you.

Circumcise therefore the foreskin of your heart, and be no more stiffnecked.

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

At that time the LORD said unto Joshua, Make thee sharp knives, and circumcise again the children of Israel the second time.

And this is the cause why Joshua did circumcise: All the people that came out of Egypt, that were males, even all the men of war, died in the wilderness by the way, after they came out of Egypt.

Circumcise yourselves to the LORD, 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 that none can quench it, because of the evil of your doings.