3 And the princes of the people of Ammon said to Hanun their lord, "Do you think that David really honors your father because he has sent comforters to you? Has David not rather sent his servants to you to search the city, to spy it out, and to overthrow it?" 4 Therefore Hanun took David's servants, shaved off half of their beards, cut off their garments in the middle, at their buttocks, and sent them away. 5 When they told David, he sent to meet them, because the men were greatly ashamed. And the king said, "Wait at Jericho until your beards have grown, and then return."

Matthew Henry's Commentary on 2 Samuel 10:3-5

Commentary on 2 Samuel 10:1-5

(Read 2 Samuel 10:1-5)

Nahash had been an enemy to Israel, yet had showed kindness to David. David therefore resolves gratefully to return it. If a Pharisee gives alms in pride, though God will not reward it, yet he that receives the alms ought to return thanks for it. Those who bear ill-will to their neighbours, are resolved not to believe that their neighbours bear any good-will to them. There is nothing so well meant, but it may be ill interpreted, and is wont to be so, by men who love nobody but themselves. The best men must not think it strange if they are thus misrepresented. Charity thinketh no evil. According to the usages of those days and countries, Hanun treated David's ambassadors in the most contemptuous manner. David showed much concern for his servants. Let us learn not to lay unjust reproaches to heart; they will wear off, and turn only to the shame of those who utter or do them; while the reputation wrongfully hurt in a little time grows again, as these beards did. God will bring forth thy righteousness as the light, therefore wait patiently for him, Psalm 37:6,7.