1 Chronicles 19:1-2

World English Bible

19 After this, Nahash the king of the children of Ammon died, and his son reigned in his place. ² David said, “I will show kindness to Hanun the son of Nahash, because his father showed kindness to me.”

So David sent messengers to comfort him concerning his father. David’s servants came into the land of the children of Ammon to Hanun to comfort him.