It requires a commitment on the part of the recipient to receive healing. It had to be ascertained verbally or in some way spiritually substantiated. Jesus asked the blind man ""Do you believe that I am able to do this?'" (Mt 9:28). A Canaanite woman even had to provide proof by saying "'even the dogs eat crumbs that fall from their masters' table'" (15:27). Although Jesus said he'd go to the centurion's house to heal his servant, the centurion had confidence in orders and said, "I am a man under authority . . . [and] say to my servant, 'Do this,' and he does it" (8:9). Therefore he said to Jesus "'just say the word, and my servant will be healed" (:8).
The result of being healed was predicated on the petitioner's belief. When the blind men answered "'Yes, Lord'" (Mt 9:28) Jesus said, "'According to your faith will it be done' . . . and their sight was restored" (:29-30). To the Canaanite woman "Jesus answered, 'Woman, you have great faith! Your request is granted.' And her daughter was healed from that very hour" (15:28). In reply to the centurion Jesus said, "'I tell you the truth, I have not found anyone in Israel with such great faith'" (8:10). Then he directed the centurion, "'Go! It will be done just as you believed it would.' And his servant was healed at that very hour" (:13).