Let not mercy and truth forsake thee: bind them about thy neck; write them upon the table of thine heart:
Ver. 3. Let not mercy and truth forsake thee,] That is, True mercy; not that which is natural or moral only, but that which is right, both quoad fontem, and quoad finem. They that do otherwise, as heathens and hypocrites, lay up their treasure in the eyes and ears of men, which is a chest that hath neither lock nor key to keep it.
Bind them.] That is, My commandments. He seems to allude to Deuteronomy 6:8. See Trapp on " Deu 6:8 "