This does not mean that God will be completely absent from hell. He is and will remain omnipresent (Ps. 139:7-8). To be separated from the Lord and cast into hell does not mean that a person will finally be free of God. That person will remain eternally accountable to Him. He will remain Lord over the person’s existence. But in hell, a person will be forever separated from God in His kindness, mercy, grace, and goodness. He will be consigned to deal with Him in His holy wrath.
Tom Ascol