Sin in Eden knocked all creation into chaos. Sin at Babel marked the collective pride of mankind. And while every sin is an act of God-rejection, humanity's wickedness reaches new heights in the horrifying events of Good Friday.
Holy Week makes us uncomfortable. There is glorious life and victory to come on Easter Sunday, but to get there we must pass directly through the darkness of Good Friday. We must remember the day when human malice broke barriers and reached levels of previously unmatched atrocity. The Messiah, the King, come to save mankind, was nailed to an accursed tree and left to die.
There is no immunity for such cosmic treason.
On Good Friday we feel the finger of guilt and culpability rightly shoved into the ribs of humanity:
"...this Jesus whom you crucified..." (Acts 2:36) "...you denied the Holy and Righteous One, and asked for a murderer to be granted to you, and you killed the Author of life..." (Acts 3:14–15) "...whom you crucified..." (Acts 4:10) "...whom you killed by hanging him on a tree..." (Acts 5:30)
Humanity has never heaped upon itself more self-condemning guilt than on Good Friday. This simple phrase -- you killed -- pierces through all vain excuses. It was a conspiracy to kill the God-man, and success in the evil plot has stained our hands with God's own blood, blood on the hands of both scheming Jews and acquiescing Gentiles.
This is why Good Friday was the most horrible sin the world ever witnessed (Sibbes). More terrible than Babel's arrogant tower. If ever there was cause for God to rain down wrath upon the world, and re-flood the globe with justice, there was no more opportune moment than the brutal slaughter of his beloved Son.
[Read the rest of the article at Desiring God.]