Deuteronomy 23:3
An Ammonite or Moabite shall not enter into the congregation of the LORD; even to their tenth generation shall they not enter into the congregation of the LORD for ever:
Torrey's Topical Textbook—AKJV

Nehemiah 13:1
On that day they read in the book of Moses in the audience of the people; and therein was found written, that the Ammonite and the Moabite should not come into the congregation of God for ever;
Torrey's Topical Textbook—AKJV