Or despisest thou the riches of his goodness and forbearance and longsuffering..? – Romans 2:4

“What the eye does not see the heart does not rue,” is a truthful proverb; but every transgression is committed in the very presence of God, so that penitent David cried, “Against Thee, Thee only have I sinned, and done this evil in Thy sight.” Transgression is committed in the sight of God, from whose eyes nothing is hidden. Remember also, that the Lord never can forget; before His eyes all things stand out in clear light, not only the things of to-day, but all the transgressions of a life. Yet for all this He doth forbear. With evil reeking before His face, He is slow to anger, and waiteth that He may be gracious.

Some are patient because they are powerless: they bear and forbear because they cannot well help themselves; but it is not so with God. Had He but willed it, you had been swept into hell; only a word from Him and the impenitent had fallen in the wilderness, and their spirits would have passed into the realms of endless woe. In a moment the Lord could have eased Himself of His adversary; He could have stopped that flippant tongue and closed that lustful eye in an instant. That wicked heart would have failed to beat if God had withdrawn His power, and that rebellious breath would have ceased also. Had it not been for longsuffering you unbelievers would long since have known what it is to fall into the hands of an angry God. Will you continue to grieve the God who so patiently bears with you?

Here let us pause; and oh, that each one who is still unsaved would sing most sincerely the words of Watts:-

“Lord, we have long abused Thy love,
Too long indulged our sin,
Our aching hearts e’en bleed to see
What rebels we have been.

“No more, ye lusts, shall ye command,
No more will we obey;
Stretch out, O God, Thy conqu’ring hand,
And drive Thy foes away.”

~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1714.cfm