2 Samuel 10:16-19

16Then Hadadezer sent and brought out the Syrians who were beyond the River, and they came to Helam. And Shobach the commander of Hadadezer’s army went before them.

17When it was told David, he gathered all Israel, crossed over the Jordan, and came to Helam. And the Syrians set themselves in battle array against David and fought with him.

18Then the Syrians fled before Israel; and David killed seven hundred charioteers and forty thousand horsemen of the Syrians, and struck Shobach the commander of their army, who died there.

19And when all the kings who were servants to Hadadezer saw that they were defeated by Israel, they made peace with Israel and served them. So the Syrians were afraid to help the people of Ammon anymore.