Deuteronomy 23:6

Never seek their peace or prosperity as long as you live.

Ezra 9:12

So do not give your daughters to their sons in marriage or take their daughters for your sons. Never seek their peace or prosperity, so that you will be strong, eat the good things of the land, and leave it as an inheritance to your sons forever.”

2 Samuel 8:2

He also defeated the Moabites, and after making them lie down on the ground, he measured them off with a cord. He measured every two cord lengths of those to be put to death and one length of those to be kept alive. So the Moabites became David’s subjects and brought tribute.

2 Samuel 12:31

He removed the people who were in the city and put them to work with saws, iron picks, and iron axes, and to labor at brickmaking. He did the same to all the Ammonite cities. Then he and all his troops returned to Jerusalem.

Nehemiah 13:23-25

In those days I also saw Jews who had married women from Ashdod, Ammon, and Moab.

Treasury of Scripture Knowledge

Summary

Thou shalt not seek their peace nor their prosperity all thy days for ever.

Bible References

Thou shalt

2 Samuel 8:2
He also defeated the Moabites, and after making them lie down on the ground, he measured them off with a cord. He measured every two cord lengths of those to be put to death and one length of those to be kept alive. So the Moabites became David’s subjects and brought tribute.
2 Samuel 12:31
He removed the people who were in the city and put them to work with saws, iron picks, and iron axes, and to labor at brickmaking. He did the same to all the Ammonite cities. Then he and all his troops returned to Jerusalem.
Ezra 9:12
So do not give your daughters to their sons in marriage or take their daughters for your sons. Never seek their peace or prosperity, so that you will be strong, eat the good things of the land, and leave it as an inheritance to your sons forever.”
Nehemiah 13:23
In those days I also saw Jews who had married women from Ashdod, Ammon, and Moab.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.