The unbelievers will be discarded 

When Jesus and his disciples arrived at Bethsaida,
people brought to him a blind man and begged Jesus to touch him.
He took the blind man by the hand and led him outside the village.
Putting spittle on his eyes he laid his hands on the man and asked,
“Do you see anything?”
Looking up the man replied, “I see people looking like trees and walking.”
Then he laid hands on the man’s eyes a second time and he saw clearly;
his sight was restored and he could see everything distinctly.
Then he sent him home and said, “Do not even go into the village.” (Mk 8:22-26)

In this case, as in that of the paralytic whom Jesus initially forgives his sins, it seems that faith is shared between the sick person and by those who help him, by leading him. In particular, the blind man explicitly trusts Jesus. In fact, he leaves the hand of those he knows to be grasped by the still unknown one of Jesus, who guides him out of the village. At the conclusion of the meeting, certainly unforgettable for the healed blind man, Jesus orders him, on returning home, not to enter the village apparently without faith. The sign of healing is intended for those who had faith: the beneficiary and those who led him mercifully to Christ. Let’s never abandon our faith in Jesus.