Albert Barnes Commentary Psalms 94:23

"And he hath brought upon them their own iniquity, And will cut them off in their own wickedness; Jehovah our God will cut them off." — Psalms 94:23 (ASV)

And he shall bring upon them their own iniquity - The consequences of their sin. He shall punish them as they deserve. See the notes on Psalms 7:16.

And shall cut them off in their own wickedness - As the result of their wickedness, and while they are engaged in perpetrating acts of sin.

Yea, the Lord our God shall cut them off - Expressing, by the repetition of the sentiment, the utmost confidence that this would be so. This is in accordance with the prayer with which the psalm opens, and is expressive of entire faith that God will deal justly with the children of men. However the wicked may seem to prosper and to triumph, yet the day of vengeance is approaching, and all which they have deserved will come upon them.