Jesus is healing all before the cross. He is forgiving sin also. He tells one that he should take up his bed and sin no more. The leaders say only God can forgive sin. The cross was so all man kind could have a sacrificial Lamb. Jesus was forgiving sin then healing as he was there present.
He wasn't taking sin on himself, but forgiving it. Same on the cross. He helped people when they saw him to have faith. Now he says believe in my atonement of Isa. 53--Matt. 8:17. It is about forgiveness not taking sin on himself.
2 Sam. 24:10 David confesses sin and asks God to take it away--no cross here. He means forgive me.
Job 7:21 We see Job is saying pardon (forgive) his sin by (taking it away). God never touches sin. He is perfect and holy. This message is to protect readers from heretical doctrine of Jesus becoming sin on the cross. He took our punishment on him. He was like the lamb sacrifice. (FORGIVE AND PARDON).
