John Gill Commentary 1 Chronicles 19:3

"But the princes of the children of Ammon said to Hanun, Thinkest thou that David doth honor thy father, in that he hath sent comforters unto thee? are not his servants come unto thee to search, and to overthrow, and to spy out the land?" — 1 Chronicles 19:3 (ASV)

(See Gill on 1 Chronicles 19:1).