Thinkest thou that David doth honor thy father - It has been a matter of just complaint through all the history of mankind, that there is little sincerity in courts. Courtiers, especially, are suspicious of each other, and often mislead their sovereigns. They feel themselves to be insincere, and suspect others to be so too.
The princes - Compare Rehoboam‘s advisers 1 Kings 12:10-11. It is not improbable that David‘s severe treatment of Moab 2 Samuel 8:2 was in part the cause of the fear of the Ammonites that a similar treatment was in store for themselves.