II Samuel 10:1-2

It happened after this that the king of the people of Ammon died, and Hanun his son reigned in his place. Then David said, “I will show kindness to Hanun the son of Nahash, as his father showed kindness to me.” So David sent by the hand of his servants to comfort him concerning his father. And David’s servants came into the land of the people of Ammon.