Deuteronomy 23:8 KJV
The children that are begotten of them shall enter into the congregation of the Lord in their third generation.
Deuteronomy 23:8, King James Version
In context
7 Thou shalt not abhor an Edomite; for he is thy brother: thou shalt not abhor an Egyptian; because thou wast a stranger in his land.
8 The children that are begotten of them shall enter into the congregation of the Lord in their third generation.
9 When the host goeth forth against thine enemies, then keep thee from every wicked thing.