He was pierced for our transgressions, he was crushed for our iniquities; the punishment that brought us peace was on him, and by his wounds we are healed. – Isaiah 53:5 (NIV)
So many years prior, Isaiah had the revelation of what was to come. Jesus fulfilled these revelations in his life as he became the sacrificial lamb, dying once for all– for all who will believe. From this we can be healed of the crisis sin puts us in.
This bit of scripture matters still because Christ died not just for those people back then, but for everyone throughout time that will receive this gift of redemption.