So they hired for themselves thirty-two thousand chariots, as well as the king of Maacah with his troops, who came and camped near Medeba while the Ammonites were mustered from their cities and marched out for battle.
We may see here, 1. How the hearts of sinners that are marked for ruin are hardened to their destruction. The children of Ammon saw that they had made themselves odious to David (Ch1 19:6), and then it would have been their wisdom to desire conditions of peace, to humble themselves and offer any satisfaction for the injury they had done him, the rather because...
Commenting on 1 Chronicles 19:6-19
So they hired thirty and two thousand chariots--Hebrew, "riders," or "cavalry," accustomed to fight either on horseback or in chariots, and occasionally on foot. Accepting this as the true rendering, the number of hired auxiliaries mentioned in this passage agrees exactly with the statement in Sa2 10:6 : twenty thousand (from Syria), twelve thousand (from Tob), equal to thirty-two thousand, and one thousand with the king of Maachah.
So they hired thirty and two thousand chariots, and the king of Maachah and his people; who came and pitched before Medeba. And the children of Ammon gathered themselves together from their cities, and came to battle. (f) Which was a city of the tribe of Reuben beyond Jordan.