GOD'S WORD® Translation
They turn their backs [and flee] because you aim your bow at their faces.

American Standard Version
For thou wilt make them turn their back; Thou wilt make ready with thy bowstrings against their face.

Berean Study Bible
For You will put them to flight when Your bow is trained upon them.

Douay-Rheims Bible
For thou shalt make them turn their back: in thy remnants thou shalt prepare their face.

English Revised Version
For thou shalt make them turn their back, thou shalt make ready with thy bowstrings against the face of them.

King James Bible
Therefore shalt thou make them turn their back, when thou shalt make ready thine arrows upon thy strings against the face of them.

World English Bible
For you will make them turn their back, when you aim drawn bows at their face.

Young's Literal Translation
For Thou makest them a butt, When Thy strings Thou preparest against their faces.

Psalm 21:12 Additional Translations ...