So many times, Jesus made statements of people’s faith bringing about miracles.

"Then touched he their eyes, saying, According to your faith be it unto you. And their eyes were opened…" - Matthew 9:29-30 KJV

"Then Jesus answered and said unto her, O woman, great is thy faith: be it unto thee even as thou wilt. And her daughter was made whole from that very hour." - Matthew 15:28 KJV

"And Jesus said unto him, Go thy way; thy faith hath made thee whole. And immediately he received his sight, and followed Jesus in the way." - Mark 10:52 KJV

"But Jesus turned him about, and when he saw her, he said, Daughter, be of good comfort; thy faith hath made thee whole. And the woman was made whole from that hour." - Matthew 9:22 KJV

"And, behold, they brought to him a man sick of the palsy, lying on a bed: and Jesus seeing their faith said unto the sick of the palsy; Son, be of good cheer; thy sins be forgiven thee." - Matthew 9:2 KJV

"But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him." - Hebrews 11:6 KJV

"Jesus answered and said unto them, Verily I say unto you, If ye have faith, and doubt not, ye shall not only do this which is done to the fig tree, but also if ye shall say unto this mountain, Be thou removed, and be thou cast into the sea; it shall be done." - Matthew 21:21 KJV