Matthew 17:20
And Jesus said unto them, Because of your unbelief: for verily I say unto you, If ye have faith as a grain of mustard seed, ye shall say unto this mountain, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you.
Cross-reference
Matthew 17:17 records Jesus' rebuke of a 'faithless generation' that precedes his explanation of little faith here.
In Matthew 17:16, the disciples' failure to heal the boy prompts Jesus' teaching here — this is the immediate narrative context.
Matthew 14:31 uses the same phrase 'little faith' as Jesus here, directly linking the two episodes of doubt.
Matthew 21:21 repeats the mountain-moving promise from this verse, linking faith without doubt to miraculous power.
In Matthew 8:13, the centurion's faith brings healing — a concrete example of the faith's power Jesus describes here.
Matthew 14:29 shows Peter stepping out in faith to walk on water — an illustration of faith's miraculous potential.
In Mark 9:23, Jesus says 'All things are possible for one who believes'—a direct parallel to faith moving mountains.
Mark 11:23 is the parallel teaching on moving mountains through faith, echoing the same promise Jesus gives here.
In Luke 17:6, Jesus gives the same mustard-seed faith teaching, but applied to moving a mulberry tree instead of a mountain.
In 1 Corinthians 13:2, Paul directly echoes mountain-moving faith, emphasizing that love must accompany such faith.
Mark 9:28 is the parallel account of the same event — disciples ask why they failed, and Jesus explains about faith.
Luke 9:40 is the parallel account of the disciples' failure to cast out a demon, leading directly to Jesus' teaching on faith.
In Numbers 20:12, Moses' unbelief prevents him from entering Canaan—the opposite outcome of faith's mountain-moving power.
In Luke 1:37, Gabriel states nothing is impossible with God—the source of faith's power, though focused on God's ability.
In Luke 18:27, Jesus says what is impossible with man is possible with God—a broader principle underlying faith's effectiveness.