For He hath made Him to be sin for us, who knew no sin; that we might be made the righteousness of God in Him. – 2 Corinthians 5:21

I thought surely I had seen the worst of sin, when I had laid it side by side, first with the character of God, and afterwards with His bounties. I cursed sin from my inmost heart and thought I had seen enough of it. But, ah! my brethren, I had not. That sense of gratitude passed away, and I found myself still prone to sin, and still loving it. But, oh, there came a thrice-happy, yet thrice-mournful hour! One day, in my wanderings, I heard a cry, a groan; me thought ’twas not a cry such as came from mortal lip, it had in it such unutterable depths of wondrous woe. I turned aside, expecting to see some great sight; and it was indeed a great sight that I saw. Lo, there, upon a tree, all bleeding, hung a man. I marked the misery that made His flesh all quiver on His bones; I beheld the dark clouds come rolling down from heaven, like the chariots of misery; I saw them clothe His brow with blackness; I saw even in the thick darkness, for mine eyes were opened, and I perceived that His heart was as full of the gloom and horror of grief as the sky was full of blackness. Then I seemed to look into His soul, and I saw there torrents of unutterable anguish, wells of torment of such an awful character that mortal lip dare not sip, lest it should be burned with scalding heat. I said, “Who is this mighty sufferer? Why doth He suffer thus? Hath He been the greatest of all sinners, the basest of all blasphemers?” But a voice came forth from the excellent glory, and it said, “This is My beloved Son; but He took the sinner’s sin upon Himself, and He must bear its penalty.” O God! I thought, I never saw sin till that hour, when I saw it tear Christ’s glories from His head, when it seemed for a moment even to withdraw the lovingkindness of God from Him, when I saw Him covered with His own blood, and plunged into the uttermost depths of oceans of grief. Then I said, “Now shall I know what Thou art, O sin, as never before I knew it!” Never, till I saw the Saviour on the tree, did I understand how base a traitor man’s guilt was to man’s God. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2656.cfm