Lo, I come. – Psalm 40:7

And almost all things are by the law purged with blood; and without shedding of blood is no remission. – Hebrews 9:22

You have been your own confidence. What you could feel, or do, or think, or resolve, had become the ground of your confidence; but now Jesus puts your self down, and He is Himself exalted. By working yourself to death, you cannot effect your own salvation. Lo, Jesus comes to save you. You cannot weave yourself a garment. Lo, He comes to clothe you from head to foot with His own seamless robe of righteousness. He annihilates self that He may fill all things.

Here is a glorious setting of Himself at our side and in our place...He puts His own name to our liabilities, and in effect, that He may meet them, He says, “Lo, I come.” Your debt of sin is discharged when you believe in Christ Jesus. “Without shedding of blood is no remission;” but the blood of Jesus Christ, God’s dear Son, cleanseth us from all sin. You are not now to bear your own sins. Behold the scape-goat, who carries them away into the wilderness! Yea, Jesus says, “Lo, I come!” He takes our sins upon Himself; He bears their penalty, and we go free. Blessed word-“Lo, I come: I come to take your weight of sin, your burden of punishment. I come to be made a curse for you, that you may be made the righteousness of God in Me.” Sinner, stand out of the way, and let Jesus appear for you, and fill your place! He sets you on one side, and then He sets Himself where you have been. Jesus is now the one pillar on which to lean, the one foundation on which to build, the one and only rest of our weary souls. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2203.cfm