Nehemiah 13:1-2

On that day there was read in the book of Moses, in the ears of the people, and it hath been found written in it that an Ammonite and Moabite doth not come into the assembly of God — unto the age, because they have not come before the sons of Israel with bread and with water, and hire against them Balaam to revile them, and our God turneth the reviling into a blessing.