When the Almighty incarnate is untimely pressed by the dark and evil angel, he immediately understood that the deceitful and destructive desire of that fallen spirit was to interpose himself in the great and eternal work of God: the salvation of man.

Certain people, when possessed by this demon of torment and death, express something very similar; rebellion, opposition and chaos against the Precious name of Jesus, the eternal Father and the Spirit of God; elaborating for themselves, suffering and separation from God, in an eternal way.

The point in question is that the person who says he does not believe in God, follows the advice of his "father the devil": he makes himself god, to avoid his responsibility with his Creator and try to take his Throne, in the lives of his fellow men.

Psalms 14:1 NKJV

1 The fool has said in his heart, “There is no God.” They are corrupt, They have done abominable works, There is none who does good.

Isaiah 14:13-15

13 For you have said in your heart: ‘I will ascend into heaven, I will exalt my throne above the stars of God; I will also sit on the mount of the congregation On the farthest sides of the north; 14 I will ascend above the heights of the clouds, I will be like the Most High.’ 15 Yet you shall be brought down to Sheol, To the lowest depths of the Pit.