19 When all the kings who were vassals of Hadadezer saw that they had been routed by Israel, they made peace with the Israelites and became subject to them. So the Arameans were afraid to help the Ammonites anymore.

Read 2 Samuel 10:19 Using Other Translations

And when all the kings that were servants to Hadarezer saw that they were smitten before Israel, they made peace with Israel, and served them. So the Syrians feared to help the children of Ammon any more.
And when all the kings who were servants of Hadadezer saw that they had been defeated by Israel, they made peace with Israel and became subject to them. So the Syrians were afraid to save the Ammonites anymore.
When all the kings allied with Hadadezer saw that they had been defeated by Israel, they surrendered to Israel and became their subjects. After that, the Arameans were afraid to help the Ammonites.