Adam Clarke on 1 Kings 19:16

Elisha - shalt thou anoint to be prophet in thy room - Jarchi gives a strange turn to these words: "Thy prophecy (or execution of the prophetic office) does not please me, because thou art the constant accuser of my children." With all their abominations, this rabbin would have us to believe that those vile idolaters and murderers were still the beloved children of God! And why? Because God had made a covenant with their fathers; therefore said the ancient as well as the modern siren song: "Once in the covenant, always in the covenant; once a son, and a son for ever." And yet we have here the testimony of God's own prophet, and the testimony of their history, that they had forsaken the covenant, and consequently renounced all their interest in it.