Deuteronomy 23:8-10

American Standard Version

⁸ The children of the third generation that are born unto them shall enter into the assembly of Jehovah.

⁹ When thou goest forth in camp against thine enemies, then thou shalt keep thee from every evil thing. ¹⁰ If there be among you any man, that is not clean by reason of that which chanceth him by night, then shall he go abroad out of the camp, he shall not come within the camp: