Matthew 9:28
And when he was come into the house, the blind men came to him: and Jesus saith unto them, Believe ye that I am able to do this? They said unto him, Yea, Lord. And when he was come into the house, the blind men came to him: and Jesus saith unto them, Believe ye that I am able to do this? They said unto him, Yea, Lord.
This belongs to the three miracles of Matthew 9:18-31, done after returning across the sea with the disciples to a great waiting crowd of rich and poor, high and low, Pharisees, doctors, lawyers, and many sick and afflicted who welcomed him with joy to hear his teaching, witness his miracles, and entreat his mercy. When he had come into the house, the two blind men came to him, and he asked them whether they believed he was able to do this, and they answered Yea, Lord, calling him Lord. The same coming into the house and questioning and answering is the setting for his teaching being strikingly simple and understandable to ordinary people even in large crowds.
The question makes their belief in his ability and power to heal them the focus, and their answer affirms their faith that he can make them whole. Together with the surrounding verses, the blind men are presented as recognizing Jesus as the promised Messiah, and their recognition made a strong impression on the crowd and the religious leaders. Their faith is followed by healing according to their faith, as he touches their eyes, tells them their healing is according to their faith, and restores their sight and opens their eyes.
He charges them not to tell anyone, but they spread his fame, which adds to the prejudice of his enemies. His teaching on the occasion presents truth in simplicity with no large words the unlearned cannot understand, so that old and young and even the veriest child can understand his words. The verse shows him joining healing the sick with proclaiming the gospel, ready to minister to bodily suffering as well as to preach. It means he made no division between proclaiming the truth and healing the sick who came to him, did not infringe on physicians by healing, but was just as ready to lay his hands in healing on the sick and afflicted as to preach the gospel and just as much at home in that work, for healing the sick is a part of the gospel. The opening of the eyes of the blind stands as an example of his power before he offered himself on the cross as the final sacrifice for humanity.