Nehemiah 13:1-3

1On that day they read aloud from the book of Moses so that the people could hear [its words], and in it was found written that no Ammonite or Moabite could ever enter the assembly of God,

2because they did not meet the Israelites with bread and water, but hired Balaam against them to curse them. Yet our God turned the curse into a blessing.

3When the Jews heard the law, they separated from Israel all who were of foreign descent.