We all have unbelief.

But, if you have faith as small as a mustard seed, nothing is impossible to you.

Have faith.

Matthew 17:20 (KJV) – 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.