…he that believeth not the Son shall not see life; but the wrath of God abideth on him. – John 3:36

Oh man, I pray you as your fellow creature let me speak with you a word of expostulation. God declares that His wrath abides upon you as an unbeliever, and do you call that nothing? God says, “I am angry with you,” and you say to Him, “I do not care, it is of very small importance to me. The rise or fall of the government bonds is of much more consequence than whether God is angry with me or not. My dinner being done to a turn concerns me a great deal more than whether the infinite God loves me or hates me.” A man who is able to take pleasure and be at ease while God is angry with him shows that his heart is harder than steel.

In certain cases, the root of this unbelief lies in another direction. It is fed by pride. The person who is guilty of it does not believe that he needs a Savior. His notion is that he will do his very best, attend the church or the meeting house very regularly, subscribe occasionally or frequently, and go to heaven partly by what he does, and partly by the merits of Christ…God believed it needful, in order to save man, that the Redeemer should die. Yet you self-righteous ones evidently think that death a superfluity, but if a man could save himself, why did the Lord descend and die to save him? If there is a way to heaven by respectability and morality without Christ, what is the good of Christ? It is utterly useless to have an expiator and a mediator, if men are so good that they do not require them. You tell God to His face that He lies to you, that you are not so sinful as He would persuade you, that you do not need a substitute and sacrifice as He says you do. Oh, sirs, this pride of yours is an arrogant rebellion against God. Look at your fine actions, you who are so good—your motives are base, your pride over what you have done has defiled, with black fingers, all your acts. In as much as you prefer your way to God’s way, and prefer your righteousness to God’s righteousness, the wrath of God abides on you. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1012.cfm