Now consider this, ye that forget God. Having been "reproved," the wicked are now, in conclusion, exhorted and warned. "Consider this;" i.e. take it to heart, reflect upon it, let it sink deeply into your minds and consciences, and act upon it.
Lest I tear you in pieces, and there be none to deliver. A most awful threat. To "tear in pieces" is the act of a wild beast (Psalms 7:2). Job declares that God "teareth him;" but otherwise the expression is scarcely used of Divine chastisements.
Certainly, if God, in his anger, lays hold upon a man to punish him, there is no possible deliverance at the hand of any other man (Psalms 49:7, Psalms 49:8). Deliverance, if it comes at all, must come from the Redeemer within the Godhead.