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 forever:

Nehemiah 13:1-2

On that day they read in the book of Moses in the hearing of the people; and in it was found written, that the Ammonite and the Moabite should not come into the congregation of God forever;

Ruth 4:6

And the kinsman said, I cannot redeem it for myself, lest I mar my own inheritance: redeem you my right to yourself; 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 through his inheritance, that the name of the dead be not cut off from among his brethren, and from the gate of this place: you are witnesses this day.

Nehemiah 4:3

Now Tobiah the Ammonite was by him, and he said, Even that which they build, if a fox goes up, he shall even break down their stone wall.

Nehemiah 4:7

But it came to pass, that when Sanballat, and Tobiah, and the Arabians, and the Ammonites, and the Ashdodites, heard that the walls of Jerusalem were being repaired, and that the breaks began to be closed, then they were very angry,

Nehemiah 13:23

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

Isaiah 56:3

Neither let the son of the foreigner, that has joined himself to the LORD, speak, saying, The LORD has utterly 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
Now Tobiah the Ammonite was by him, and he said, Even that which they build, if a fox goes up, he shall even break down their stone wall.
Nehemiah 13:1
On that day they read in the book of Moses in the hearing of the people; and in it was found written, that the Ammonite and the Moabite should not come into the congregation of God forever;
Isaiah 56:3
Neither let the son of the foreigner, that has joined himself to the LORD, speak, saying, The LORD has utterly separated me from his people: neither let the eunuch say, Behold, I am a dry tree.