Atheist and their denial

And as it is appointed unto men once to die, but after this the judgment: Hebrews 9:27 KJV

An atheist has not faced up to the reality of death and deceive themselves to believe that once you die, that is it, and there is no judgment.

Every person who calls themselves an atheist knows there is a God, but convince themselves there is no God, to deceive themselves to not face up to the reality there is a God, a Holy God they are accountable to for the words they speak, the thoughts they think, and the deeds they work.

An atheist has pleasure in unrighteousness, and to admit they are accountable to God is abhorrent to them, because it means they are accountable to God by His standard (His Law) that opposes their lifestyle, and makes them guilty before their Creator, so they deny God, so they can set their own standard, a standard that allows them and says it is ok to have pleasure in sin, and no God to face in judgment.

But the truth of the matter is they are accountable to God, and simply convincing yourself there is no God, does not take away the reality of the judgment to come. Their atheism cannot and will not change the truth of God and His judgment.