Deuteronomy 23:2

New International Version

No one born of a forbidden marriage nor any of their descendants may enter the assembly of the Lord, not even in the tenth generation.

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Let no foreigner who is bound to the Lord say, “The Lord will surely exclude me from his people.” And let no eunuch complain, “I am only a dry tree.”

“But you—come here, you children of a sorceress, you offspring of adulterers and prostitutes!

or who is a hunchback or a dwarf, or who has any eye defect, or who has festering or running sores or damaged testicles.

A mongrel people will occupy Ashdod, and I will put an end to the pride of the Philistines.

You are doing the works of your own father.” “We are not illegitimate children,” they protested. “The only Father we have is God himself.”

No one who has been emasculated by crushing or cutting may enter the assembly of the Lord.

No Ammonite or Moabite or any of their descendants may enter the assembly of the Lord, not even in the tenth generation.

If you are not disciplined—and everyone undergoes discipline—then you are not legitimate, not true sons and daughters at all.