When Jesus came to earth He preached the Gospel of the kingdom of God which included healing the sick. The Kingdom of God is about the Gospel and its application on earth as in heaven. It comes together with healing.
Here are some of the Bible verses that tell us what Jesus did:
[ Jesus Heals a Great Multitude ] And Jesus went about all Galilee, teaching in their synagogues, preaching the gospel of the kingdom, and healing all kinds of sickness and all kinds of disease among the people.
[ The Compassion of Jesus ] Then Jesus went about all the cities and villages, teaching in their synagogues, preaching the gospel of the kingdom, and healing every sickness and every disease among the people.
And this gospel of the kingdom will be preached in all the world as a witness to all the nations, and then the end will come.
[ Jesus Begins His Galilean Ministry ] Now after John was put in prison, Jesus came to Galilee, preaching the gospel of the kingdom of God,
and saying, “The time is fulfilled, and the kingdom of God is at hand. Repent, and believe in the gospel.”