Deuteronomy 23:3

An Ammonite or Moabite shall not come into the congregation of Jehovah; even their tenth generation shall not come into the congregation of Jehovah for ever;

Nehemiah 13:1-2

On that day they read in the book of Moses in the audience of the people; and there was found written in it that the Ammonite and the Moabite should not come into the congregation of God for ever;

Ruth 4:6

And he that had the right of redemption said, I cannot redeem it for myself, lest I mar mine own inheritance. Redeem thou for thyself what I should redeem, for I cannot redeem it.

Ruth 4:10-22

moreover Ruth the Moabitess, the wife of Mahlon, have I purchased to be my wife, to raise up the name of the dead upon his inheritance, that the name of the dead be not cut off from among his brethren and from the gate of his place: ye are witnesses this day.

Nehemiah 4:3

And Tobijah the Ammonite was by him, and he said, Even that which they build, if a fox went up, it would break down their stone wall. --

Nehemiah 4:7

And it came to pass, when Sanballat, and Tobijah, and the Arabians, and the Ammonites, and the Ashdodites heard that the walls of Jerusalem were being repaired, that the breaches began to be stopped, then they were very wroth,

Nehemiah 13:23

In those days also I saw Jews that had married wives of Ashdod, of Ammon, and of Moab.

Isaiah 56:3

And let not the son of the alien, that hath joined himself to Jehovah, speak saying, Jehovah hath entirely separated me from his people; neither let the eunuch say, Behold, I am a dry tree;

Treasury of Scripture Knowledge

Summary

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:

Bible References

Ammonite

Nehemiah 4:3
And Tobijah the Ammonite was by him, and he said, Even that which they build, if a fox went up, it would break down their stone wall. --
Nehemiah 13:1
On that day they read in the book of Moses in the audience of the people; and there was found written in it that the Ammonite and the Moabite should not come into the congregation of God for ever;
Isaiah 56:3
And let not the son of the alien, that hath joined himself to Jehovah, speak saying, Jehovah hath entirely separated me from his people; neither let the eunuch say, Behold, I am a dry tree;