1 Chronicles 19:1-9

Some time later,  King Nahash of the Ammonites died, and his son became king in his place. Then David said, “I’ll show kindness to Hanun son of Nahash, because his father showed kindness to me.” So David sent messengers to console him concerning his father. However, when David’s emissaries arrived in the land of the Ammonites to console him, the Ammonite leaders said to Hanun, “Just because David has sent men with condolences for you, do you really believe he’s showing respect for your father? Instead, haven’t his emissaries come in order to scout out, overthrow, and spy on the land? ” So Hanun took David’s emissaries, shaved them, cut their clothes in half at the hips, and sent them away.  It was reported to David about his men, so he sent messengers to meet them, since the men were deeply humiliated. The king said, “Stay in Jericho until your beards grow back; then return.” When the Ammonites realized  they had made themselves repulsive to David, Hanun and the Ammonites sent thirty-eight tons  of silver to hire chariots and horsemen from Aram-naharaim, Aram-maacah, and Zobah.  They hired thirty-two thousand chariots and the king of Maacah with his army, who came and camped near Medeba.  The Ammonites also came together from their cities for the battle. David heard about this and sent Joab and all the elite troops. The Ammonites marched out and lined up in battle formation at the entrance of the city while the kings who had come were in the field by themselves.