1 Chronicles 19:6-8

New Catholic Bible

⁶ The Ammonites realized that they had become abhorrent to David, so Hanun and the Ammonites sent one thousand talents of silver to hire chariots and horsemen from Mesopotamia, Aram, and Zobah. ⁷ They hired thirty-two thousand chariots for themselves along with the king of Maacah and his people. They came and camped in front of Medeba. The Ammonites also assembled from out of their cities and went out to fight.

⁸ David heard about this, so he sent Joab and his army of brave warriors out.