1. Christ healed leprosy. (Lev 14:2)
    Isa 53:4-5, Mt 8:2-4, 17, 1 Pt 2:24

In the Old Testament, when a leper was healed, the leper was brought to the priest. (Lev 4:2)

Lev 4:2 Speak unto the children of Israel, saying, If a soul shall sin through ignorance against any of the commandments of the Lord concerning things which ought not to be done, and shall do against any of them:

In the Old Testament, it was foretold that Christ would take our sufferings, suffer and die so that we would be healed. (Isa 53:4-5)

Isa 53:4 Surely he hath borne our griefs, and carried our sorrows: yet we did esteem him stricken, smitten of God, and afflicted.
5 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.

Jesus healed the lepers according to the prophecy of the Old Testament. (Mt 8:2-4, 17)

Mt 8:2 And, behold, there came a leper and worshipped him, saying, Lord, if thou wilt, thou canst make me clean.
3 And Jesus put forth his hand, and touched him, saying, I will; be thou clean. And immediately his leprosy was cleansed.
4 And Jesus saith unto him, See thou tell no man; but go thy way, shew thyself to the priest, and offer the gift that Moses commanded, for a testimony unto them.
17 That it might be fulfilled which was spoken by Esaias the prophet, saying, Himself took our infirmities, and bare our sicknesses.

We are healed by Jesus dying on the cross. (1 Peter 2:24)

1 Peter 2:24 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.