The fool says in his heart, "God does not exist." They are corrupt; their actions are revolting. There is no one who does good.
References for Psalms 14:1
The Lord looks down from heaven on the human race to see if there is one who is wise, one who seeks God.
All have turned away; all alike have become corrupt. There is no one who does good, not even one.
References for Psalms 14:3
Will evildoers never understand? They consume my people as they consume bread; they do not call on the Lord.
Then they will be filled with terror, for God is with those who are righteous.
References for Psalms 14:5
You [sinners] frustrate the plans of the afflicted, but the Lord is his refuge.