2 Samuel 10:2-3

David said, “Nahash was loyal to me, so I will be loyal to his son Hanun.” So David sent his messengers to comfort Hanun about his father’s death. David’s officers went to the land of the Ammonites. But the Ammonite leaders said to Hanun, their master, “Do you think David wants to honor your father by sending men to comfort you? No! David sent them to study the city and spy it out and capture it!”