For I will be unto Ephraim as a lion - He who would thus strengthen himself by Outward help against God’s chastisements, challenges, as it were, the Almighty to a trial of strength. So then God, unwilling to abandon him to himself, changes His dealings, and , “He who had heretofore, in His judgments, seemed but as a tender moth or a weak worm,” now shows forth His resistless power, imaged by His creatures in whom the quality of power is most seen. It may again be, that the fiercer animal (literally, the roaring) is associated with the name of Ephraim; that of the younger lion, fierce and eager for prey, yet not full-grown, with that of Judah.
I, I will tear - “It is a fearful thing, to fall into the Hands of the Living God” Hebrews 10:31. The Assyrian was but the rod of God’s anger, and the staff, He says, in thine hand is His indignation” Isaiah 10:5. Whatever is done, is done or overruled by God, who gives to the evil his power to do, in an evil way, what He Himself overrules to the end of His wisdom or justice. God, Himself would tear them asunder, by giving the Assyrians power to carry them away. And since it was God who did it, there was no hope of escape. He who was faithful to His word would do it. There is great emphasis on the I, I. God and not man; He, the author of all good, would Himself be the cause of their evil. What hope then is there, when He, who is mercy, becomes the avenger?