The words of Jonadab the son of Rechab, that he commanded his sons not to drink wine, are performed; for unto this day they drink none, but obey their father's commandment: notwithstanding I have spoken unto you, rising early and speaking; but ye hearkened not unto me.
They ... obey their father's commandment: notwithstanding I - (Malachi 1:6, "A son honoureth his father ... if then I be a father, where is mine honour?")
Rising early and speaking - God Himself speaking late and early, by His various ways of providence and grace. In Jeremiah 35:15; 2 Chronicles 36:15, a distinct mode of address is alluded to-namely, God sending His servants, "rising up early and sending them."