And to Jesus the mediator of the new covenant, and to the blood of sprinkling, that speaketh better things than that of Abel. – Hebrews 12:24

I bid you notice that we are expressly told that this precious blood speaks “better things than that of Abel.” I do not think that the whole meaning of the passage is exhausted if we say that Abel’s blood cries for vengeance, and that Christ’s blood speaks for pardon.

What does the blood of Abel speak? The blood of Abel speaks to a complete and believing obedience to God. It shows us a man who believes God, and notwithstanding the enmity of his brother, brings to God the appointed sacrifice of faith, strictly following up, even to the bitter end, his holy obedience to the Most High. The death of Jesus Christ was the crown and close of a perfect life; it was a fit completion of a course of holiness. In obedience to the Great Father, Jesus even laid down His life. But if this is all the blood of Jesus speaks, as some say that it is, then it does not speak better things than the blood of Abel, for it only says the same things in a louder voice. The martyrdom of any saint has a voice for obedience to God as truly as the martyrdom of Jesus, but the death of our Lord says far more, infinitely more, than this. It not only witnesses to complete obedience, but it provides the way by which the disobedient may be forgiven and helped to obedience and holiness. The cross has a greater, deeper, gladder gospel for fallen men than that of a perfect example which they are unable to follow. Our Lord’s blood says “better things than that of Abel,” and what does it say? It says, “There is redemption through His blood, the forgiveness of sins according to the riches of His grace.” ~ C.H. Spurgeon

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