John Gill Commentary Psalms 50:22

"Now consider this, ye that forget God, Lest I tear you in pieces, and there be none to deliver:" — Psalms 50:22 (ASV)

Now consider this
The evils that had been committed, and repent of them; for repentance is an after thought and reconsideration of sin, and humiliation for it.

That the Lord, was not like them, not an approver of sin, but a reprover for it; and what would be their latter end, what all this would issue in, in case of impenitence;

you that forget God ;
that there is a God, his being, perfections, word, works, and benefits;

lest I tear [you] in pieces ;
as a lion, leopard, or bear; see (Hosea 13:7Hosea 13:8).

Which was accomplished in the destruction of Jerusalem; when both their civil and ecclesiastical state were torn in pieces; their city and temple levelled with the ground, and not one stone left upon another; and they scattered about in the earth;

and [there be] none to deliver ;
which denotes their utter and irreparable ruin, till the time comes they shall turn to the Lord; see (Isaiah 42:22) .