Old Testament prophecies of salvation and the forgiveness of sins often include the language of physical healing, associating disease and sickness with sin, and health and wholeness with the forgiveness of sin. For example, “Bless the Lord, O my soul, and do not forget all his benefits—who forgives all your iniquity, who heals all your diseases (Psalm 103:2). And in this description by Isaiah of the New Jerusalem, wherein God dwells with his people, which we understand to be fulfilled in the church (cf. Hebrews 12:22-24; Revelation 21:2, 9-10), the eradication of “sickness” is accomplished by the forgiveness of sins:
Isaiah 33:24 And no inhabitant [of the New Jerusalem] will say, "I am sick"; the people who live there will be forgiven their iniquity.
In Mark’s gospel, Jesus comes on the scene healing, and specifically according to Isaiah’s prophecy, he heals the blind, deaf, lame and the mute, as well as many other diseases (cf. 1:29-34; 40-45; 2:1-12; 3:1-6; 5:21-41; 6:53-56; 7:31-36; 10:46-52). In addition to healing physical disease, Jesus casts out many “unclean” or “demonic” spirits (cf. 1:21-28; 32-34; 5:1-11; 7:24-30; 9:14-29).
When Jesus responds to the faith of the paralytic and his friends by saying to the paralytic, “Son, your sins are forgiven,” the scribes charge him with blasphemy, as only God can forgive sins. Jesus’ reply to them confirms that their understanding is indeed correct: only God can forgive sins. And just “so that you may know that the Son of Man has authority on earth to forgive sins,” (in other words, so that you know that I, the Son of Man, am indeed God, “your Redeemer, the Holy One of Israel”), he says to the paralytic, “stand up” (cf. 2:1-12).
 Isaiah 35:5 Then the eyes of the blind shall be opened, and the ears of the deaf unstopped; 6 then the lame shall leap like a deer, and the tongue of the speechless sing for joy. For waters shall break forth in the wilderness, and streams in the desert. (See also Luke 7:21-22.)
 “But now thus says the Lord, he who created you, O Jacob, he who formed you, O Israel: Do not fear, for I have redeemed you; I have called you by name, you are mine... For I am the Lord your God, the Holy One of Israel, your Savior...I am the Lord and beside me there is no Savior...Thus says the Lord, your Redeemer, the Holy One of Israel... I am the Lord, your Holy One, the Creator of Israel, your King... I am He who blots out your transgressions for my own sake, and I will not remember your sins” (cf. Isaiah 43:1,3,11,14,15,25).