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. – Psalm 14:1

I see the ungodly man putting this poor fleeting world before the eternal world to come; therein he is a fool; but let me take heed that I in no measure imitate him. Let me never in my business live as though to make money; to get a competence, to earn the wherewithal to eat and drink, were the first thing with me. Let me not fall into his error, but ever seek first the kingdom of God and His righteousness and believe that other things shall be added to me. The ungodly man disregards God. God is not in all his thoughts. He saith in his heart, “No God.” Now when I know that the ungodly man does that, it should be a warning to me not to forget the Lord or depart from Him in any measure. Alas, we are all of us more or less atheistic. How little of our life is given to God! You who love and fear Him are not always near to Him, though He is always near to you. Do you never enter upon your enterprises without Him? When you begin your business with Him, are you not apt to forget Him in the middle passage of it? Or when you have gone on to the very center of a work with Him, are you not liable to leave Him ere you close? Is not this to learn the way of the wicked and to be like them in wandering away from the living God? To have God always with us, to lean hourly upon Him, and to feel each moment that He is all in all to us-this is the true condition in which our minds ought to be continually. The atheism of the outside world should warn us against the inward godlessness of our naturally atheistic hearts. Be you of another spirit; be courteous, cultivate the grace of cheerfulness and good temper as a Christian. The moroseness of the churl should enforce upon you the duty of godly gentleness. The Lord make us wise and prudent, and from the errors of others may we learn to steer our own course aright ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0983.cfm