Surely he hath borne our griefs, and carried our sorrows: yet we did esteem him stricken, smitten of God, and afflicted. But he was wounded for our transgressions, he was bruised for our iniquities: the chastisement of our peace was upon him; and with his stripes we are healed. Isaiah 53:4-5 KJV
The fall of Adam, the first man, brought the full weight of sin upon the whole of creation. sickness, disease, poverty, strife, hatred, and much more, were loosed upon mankind. The creation became cursed.
God sent His only begotten Son, Jesus, and He became the cursed that we might become the blessed. He redeemed us from sickness and disease and set us free from the bondage of satan’s dominion.
Who his own self bare our sins in his own body on the tree, that we, being dead to sins, should live unto righteousness: by whose stripes ye were healed. 1 Peter 2:24 KJV