Deuteronomy 15:17

15:17 you shall take an awl and pierce a hole through his ear to the door. Then he will become your servant permanently (this applies to your female servant as well).

Deuteronomy 23:3

23:3 An Ammonite or Moabite may not enter the assembly of the Lord; to the tenth generation none of their descendants shall ever do so,

Deuteronomy 29:29

29:29 Secret things belong to the Lord our God, but those that are revealed belong to us and our descendants forever, so that we might obey all the words of this law.

Deuteronomy 32:7

32:7 Remember the ancient days;

bear in mind the years of past generations.

Ask your father and he will inform you,

your elders, and they will tell you.