They seek to banish such a God from their thoughts!

(Arthur Pink)

"You have done these things, and I kept silent. You thought that I was just like you! But I will rebuke you and accuse you to your face." Psalm 50:21

The only God against whom the natural man is not at enmity — is one of his own imagination! The deity whom he professes to worship, is not the living God — for He is truth and faithfulness, holiness and justice, as well as being gracious and merciful.

It is a god of their own devising — and not the God of Holy Writ, whom the ungodly believe in!

"They say: How can God know? Does the Most High even know what is happening?" Psalm 73:11
They would strip Deity of His omniscience if they could!
The wicked wish that there might be . . .
  no Witness of their sins,
  no Searcher of their hearts,
  no Judge of their deeds!
They seek to banish such a God from their thoughts!

What a proof that "the carnal mind is enmity against God!"

Such is the portion awaiting the lost:
  eternal separation from the fountain of all goodness;
  everlasting punishment;
  torment of soul and body;
  endless existence in the Lake of Fire;
  forever locked up with demons and the vilest of the vile;
  every ray of hope excluded; and
  utterly crushed and overwhelmed by the wrath of a sin-avenging God!
"Consider this, you who forget God — or I will tear you to pieces, with none to rescue!" Psalm 50:22