Luke 17:5,6

Make our faith greater. The disciples ask for faith to be able to do the things he has just told them. If you had faith as big as a mustard seed. Godet writes: "The only real power of the universe is the divine will. The human will, which has discovered the secret of blending with this force of forces, is raised, in virtue of this union, to omnipotence." But the gap between ourselves and God shows how far we are from that perfect union. See notes on Matthew 14:28-31. [The mulberry tree is a "fig-mulberry," called a sycamine in some versions. It was large, with very deep roots.]