How do we know faith is necessary for healing?

Faith is presented as a requisite for healing throughout the Scriptures. In the account of the centurion's servant (Matthew 8:5-13), Jesus emphasizes that the healing was granted according to the centurion's belief. 'As you have believed, so let it be done for you' illustrates that faith in Jesus' power is essential for receiving His blessings. This aligns with Scripture that teaches salvation and healing are bestowed upon those who trust wholeheartedly in Him. Great faith often brings about great blessings, as indicated by the centurion's example.