The fool, the spiritually worthless, the madman in things pertaining to his soul's salvation, hath said in his heart, it is his steady secret thought and delusion, There is no God. A person who denies the existence of God is truly foolish, filled with madness; he denies the evidences of his own senses, he deliberately silences the voice of his own conscience. They, all those who give way to foolishness in this manner, are corrupt, they have done abominable works, the idea of badness being emphasized by the whole structure of the text. There is none that doeth good, the inherited wickedness of the human heart is intensified in the case of those who deliberately give way to godlessness.
Related Commentaries of Psalms 14:1
Psalms 14:1
1 The fool hath said in his heart, There is no God. They are corrupt, they have done abominable works, there is none that doeth good.