He was despised and rejected by men; a man of sorrows, and acquainted with grief; and as one from whom men hide their faces he was despised, and we esteemed him not.
Surely he has borne our griefs and carried our sorrows; yet we esteemed him stricken, smitten by God, and afflicted. But he was pierced for our transgressions; he was crushed for our iniquities; upon him was the chastisement that brought us peace, and with his wounds 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. He was oppressed, and he was afflicted, yet he opened not his mouth; like a lamb that is led to the slaughter, and like a sheep that before its shearers is silent, so he opened not his mouth.
This time around, one line stood out: "Upon Him was the chastisement that brought us peace."
Peace is a big word.
In this passage, "peace" is peace with God.
God is a God of love; He is also a God of justice. That's not contradictory: perfect love demands perfect justice, and that doesn't mean justice for me, it means justice for everybody.
Justice doesn't mean that the person who wronged "me" gets what they deserve: it means that the God of justice demands payment for each sin committed.
Only when justice is satisfied, can peace begin.
Jesus was pierced for our transgression; THAT chastisement brought the elect peace with the Father.