Faith is the empty hand that receives the undeserved gift of pardon from God. Each passage on faith gives us more insight on its nature. Jesus responds by asking if they believe he is able to do this. They respond with a confident yes. Here are a few lessons we can learn from this gospel narrative.
Faith is an interchange between persons.
They speak and Christ responds. Christ speaks and they respond. He calls on them to declare their faith and they respond positively. Here we see that faith is part of a relationship between persons. Our faith must be a response to the Living Person of Christ.