TSK
Treasury of Scripture Knowledge references in WEB.
When a stranger shall live as a foreigner with you, and will keep the Passover to Yahweh, let all his males be circumcised, and then let him come near and keep it; and he shall be as one who is born in the land: but no uncircumcised person shall eat of it.
Joshua made himself flint knives, and circumcised the children of Israel at the hill of the foreskins.
David sent messengers to Ishbosheth, Saul's son, saying, "Deliver me my wife Michal, whom I pledged to be married to me for one hundred foreskins of the Philistines."
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 those who believe, though they might be in uncircumcision, that righteousness might also be accounted to them.