Seek not the things that are too high for thee, and search not into things above thy ability ... For it is not necessary for thee to see with thy eyes those things that are hid. Ecclesiasticus / Sirach 3:22
How much faith do you need, according to Jesus, to move a mountain?
As much as a grain of mustard seed
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. Matthew 17:20