This Psalm basically says that those who reject God are acting like fools, stubbornly ignoring His existence. It’s not about lacking intelligence or evidence, but about choosing to live as if God doesn’t matter.

From God’s perspective, humanity was once beautiful but got messed up by sin. Even when people try to be good, sin messes things up. David is pointing out how messed up those are who reject God’s existence.

But David believes that those who ignore God will face judgment, while believers can find comfort knowing that God will set things right.

In the end, the Psalm looks forward to when Jesus comes back to establish His kingdom on Earth, which is a total win against sin. This gives all God’s people a big reason to celebrate.