Those Who Have Faith as a Grain of Mustard Seed
Jesus tells the parable of the mustard seed. Just as a seed that looks exceedingly small becomes a great tree, he knew beforehand that the small and wavering faith of his disciples would also be sown in good soil and grow. Even after hearing his words, the disciples were not fully convinced that the Kingdom of God truly existed, or that Jesus was the Messiah.
A seed buried in the ground frets over whether it must break through, yet once it puts down roots and comes up, it meets the sunlight, the rain, and the God who brings all of it about. Even amid fear and doubt, the truth grew within the disciples, until at last they became a mighty tree that bore witness to Christ, even to the point of martyrdom. Those who hear the word with prejudice and a crooked heart, however, turn back like Judas Iscariot and never fulfill their calling.
Caught in a great windstorm on the boat, the disciples woke Jesus in their fear, and he rebuked them for their lack of faith. The work of God is accomplished according to his plan, not by human ability or circumstances. So when the faithful do their utmost where they now stand and believe that the Holy Spirit is with them, even faith like a mustard seed will without fail grow great.