Why is faith important in following Jesus?

Faith is central to the Christian life, as illustrated by Peter's attempt to walk on water in Matthew 14. Initially, he demonstrates great faith by stepping out of the boat but begins to sink when fear overtakes him. J.C. Ryle points out that the issue is not the absence of faith, but the weakness of faith—when believers fixate on their circumstances rather than trusting in Christ. Faith is important because it enables Christians to navigate life's difficulties with the knowledge that Christ is able to uphold them, as echoed in John 14:12 where Jesus speaks of greater works being done by those who believe in Him.