Surely he has borne our griefs
and carried our sorrows;
yet we esteemed him stricken,
smitten by God, and afflicted.
But he was wounded for our transgressions;
he was crushed for our iniquities;
upon him was the chastisement that brought us peace,
and with his stripes we are healed.
All we like sheep have gone astray;
we have turned—every one—to his own way;
and the Lord has laid on him
the iniquity of us all. (Isaiah 53:4-6 ESV)
This was the passage the Eunuch was reading in Acts when Philip was told to go and stand next to his chariot. Philip was able to explain to him that Isaiah was writing about Jesus, whose death on the cross was not for his own sin but for ours.