"When the disciples saw him walking on the sea they were terrified.“It is a ghost,” they said, and they cried out in fear.At once Jesus spoke to them, “Take courage, it is I; do not be afraid.”Peter said to him in reply,“Lord, if it is you, command me to come to you on the water.”He said, “Come.” Matthew 14:25-28
Faith is not a blind leap as some have suggested. Faith does not require you to believe something that is contrary to Natural Law or to logic. When Jesus tests Peter on the water, it is Peter who first asks Jesus "command me to come to you on the water" Peter is asking is this as reasonable thing, given that Jesus could do it. The point of this is not that we are going to be able to cross the oceans and the seas in our Nike sandals. What Jesus is asking is this: can you respond to my call? You may not be asked to walk on water but rather to be there for someone in need, or to be a mother or father, or teach, or to support a family, to be a missionary to the poor, or give your life entirely as a priest. It is reasonable to consider that we all have some vocation (the word means calling), and the one calling us is Jesus. Are you able to hear His call? Are you listening or is His voice drowned out by the noise of the material world. In my humble opinion, the most significant action one can take in one's life, after of course having faith, is to listen carefully for the call of Jesus, so that your gifts contribute to His Kingdom, the Body of Christ, and you fulfill your life's calling.