Genesis 17:11
And ye shall be circumcised in the flesh of your foreskin; and it shall be a token of a covenant betwixt me and you.
Romans 4:11
and he received the sign of circumcision, a seal of the righteousness of the faith which he had while he was in uncircumcision; that he might be the father of all them that believe, though they be in uncircumcision, that righteousness might be reckoned unto them;
Acts 7:8
And he gave him the covenant of circumcision: and so Abraham begat Isaac, and circumcised him the eighth day; and Isaac begat Jacob, and Jacob the twelve patriarchs.
Exodus 4:25
Then Zipporah took a flint, and cut off the foreskin of her son, and cast it at his feet; and she said, Surely a bridegroom of blood art thou to me.
Exodus 12:48
And when a stranger shall sojourn with thee, and will keep the passover to Jehovah, let all his males be circumcised, and then let him come near and keep it; and he shall be as one that is born in the land: but no uncircumcised person shall eat thereof.
Deuteronomy 10:16
Circumcise therefore the foreskin of your heart, and be no more stiffnecked.
Joshua 5:3
And Joshua made him knives of lint, and circumcised the children of Israel at the hill of the foreskins.
1 Samuel 18:25-27
And Saul said, Thus shall ye say to David, The king desireth not any dowry, but a hundred foreskins of the Philistines, to be avenged of the king's enemies. Now Saul thought to make David fall by the hand of the Philistines.
2 Samuel 3:14
And David sent messengers to Ish-bosheth, Saul's son, saying, Deliver me my wife Michal, whom I betrothed to me for a hundred foreskins of the Philistines.