New Revised Standard Version
You shall never promote their welfare or their prosperity as long as you live.

Contemporary English Version
Don't even think of signing a peace treaty with Moab or Ammon.

New American Bible
Never seek their welfare or prosperity as long as you live.

Douay-Rheims Bible
Thou shalt not make peace with them, neither shalt thou seek their prosperity all the days of thy life for ever.

Thou shalt not make peace with them, neither shalt thou seek their prosperity all the days of thy life for ever.

Thou shalt

2 Samuel 8:2 And he defeated Moab, and measured them with a line, casting them down to the earth: and he measured with two lines, one to put to death, and one to save alive: and Moab was made to serve David under tribute.

2 Samuel 12:31 And bringing forth the people thereof he sawed them, and drove over them chariots armed with iron: and divided them with knives, and made them pass through brickkilns: so did he to all the cities of the children of Ammon: and David returned, with all the army to Jerusalem.

Ezra 9:12 Now therefore give not your daughters to their sons, and take not their daughters for your sons, and seek not their peace, nor their prosperity for ever: that you may be strengthened, and may eat the good things of the land, and may have your children your heirs for ever.

Nehemiah 13:23-25 In those days also I saw Jews that married wives, women of Azotus, and of Ammon, and of Moab. . . .

prosperity [heb] good