And when he saw their faith, he said, “Man, your sins are forgiven you.” 21 And the scribes and the Pharisees began to question, saying, “Who is this who speaks blasphemies? Who can forgive sins but God alone?” 22 When Jesus perceived their thoughts, he answered them, “Why do you question in your hearts? 23 Which is easier, to say, ‘Your sins are forgiven you,’ or to say, ‘Rise and walk’? 24 But that you may know that the Son of Man has authority on earth to forgive sins”—he said to the man who was paralyzed—“I say to you, rise, pick up your bed and go home.” 25 And immediately he rose up before them and picked up what he had been lying on and went home, glorifying God. (Luke 5:20–25, ESV)
The idea that the man was paralyzed as punishment for sin was apparently what the Pharisees believed. However, this seems inconsistent with what Jesus taught.
There were some present at that very time who told him about the Galileans whose blood Pilate had mingled with their sacrifices. 2 And he answered them, “Do you think that these Galileans were worse sinners than all the other Galileans, because they suffered in this way? 3 No, I tell you; but unless you repent, you will all likewise perish. 4 Or those eighteen on whom the tower in Siloam fell and killed them: do you think that they were worse offenders than all the others who lived in Jerusalem? 5 No, I tell you; but unless you repent, you will all likewise perish.” (Luke 13:1–5, ESV)
As he passed by, he saw a man blind from birth. 2 And his disciples asked him, “Rabbi, who sinned, this man or his parents, that he was born blind?” 3 Jesus answered, “It was not that this man sinned, or his parents, but that the works of God might be displayed in him. 4 We must work the works of him who sent me while it is day; night is coming, when no one can work. 5 As long as I am in the world, I am the light of the world.” 6 Having said these things, he spit on the ground and made mud with the saliva. Then he anointed the man’s eyes with the mud 7 and said to him, “Go, wash in the pool of Siloam” (which means Sent). So he went and washed and came back seeing. (John 9:1–7, ESV)
Thus, in Luke 5:20-25 did Jesus accommodate the Pharisees' belief that illness was punishment for sin to show that Jesus can forgive our sins?