New International Version
Then my enemies will turn back when I call for help. By this I will know that God is for me.

American Standard Version
Then shall mine enemies turn back in the day that I call: This I know, that God is for me.

Berean Study Bible
Then my enemies will retreat on the day I cry for help. By this I will know that God is on my side.

Douay-Rheims Bible
Then shall my enemies be turned back. In what day soever I shall call upon thee, behold I know thou art my God.

English Revised Version
Then shall mine enemies turn back in the day that I call: this I know, that God is for me.

King James Bible
When I cry unto thee, then shall mine enemies turn back: this I know; for God is for me.

World English Bible
Then my enemies shall turn back in the day that I call. I know this, that God is for me.

Young's Literal Translation
Then turn back do mine enemies in the day I call. This I have known, that God is for me.

Psalm 56:9 Additional Translations ...