But ye are come unto mount Sion…and to Jesus the mediator of the new covenant, and to the blood of sprinkling, that speaketh better things than that of Abel. See that ye refuse not Him that speaketh. – Hebrews 12:22,24,25

I ask you to look at the text and observe that this sprinkling of the blood, as mentioned by the Holy Spirit in this passage, is absolutely identical with Jesus Himself. Read it. “To Jesus the mediator of the new covenant, and to the blood of sprinkling, that speaks better things than that of Abel. See that you refuse not Him who speaks.” He says it is the blood that speaks, and then he proceeds to say, “See that you refuse not Him who speaks.” The Spirit of God intentionally sets forth the striking truth, that the sacrifice is identical with the Savior. “We are come to the Savior, the mediator of the new covenant, and to the blood of sprinkling that speaks; see that you refuse not Him.” Beloved friends, there is no Jesus if there is no blood of sprinkling; there is no Savior if there is no sacrifice. I put this strongly, because the attempt is being made nowadays to set forth Jesus apart from His cross and atonement. He is held up as a great ethical teacher, a self-sacrificing spirit, who is to lead the way in a grand moral reformation, and by His influence to set up a kingdom of moral influence in the world. It is even hinted that this kingdom has never had prominence enough given to it because it has been overshadowed by His cross. But where is Jesus apart from His sacrifice? He is not there if you have left out the blood of sprinkling, which is the blood of sacrifice. Without the atonement, no man is a Christian, and Christ is not Jesus. If you have torn away the sacrificial blood, you have drawn the heart out of the gospel of Jesus Christ and robbed it of its life. If you have trampled on the blood of sprinkling, and counted it a common thing, instead of putting it above you upon the lintel of the door, and all around you upon the two side posts, you have fearfully transgressed. As for me, God forbid that I should glory save in the cross of our Lord Jesus Christ, since to me that cross is identical with Jesus Himself. I know no Jesus but He who died the just for the unjust. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1888.cfm