It doesn’t require a confession of faith first. Following Jesus creates a situation in which we can come to faith, and our faith will grow. As Peter did when he left his fishing nets on the shore and took up Jesus’s call to follow, he didn’t know what his future life had in store for doing so. He didn’t know Jesus, so he didn’t choose to follow based on his faith, but he did recognize Jesus’s AUTHORITY. If he had refused and stayed behind, he would have not had the opportunity to learn to believe.
Acquiring faith is not a matter of sitting and waiting, but of rising up, and deciding to follow Him. Jesus calls us to follow Him “not as a teacher or a pattern of the good life, but as the Christ, the Son of God.”
Bonhoeffer asks us: “Are you worried because you find it so hard to believe?... Is there some part of your life which you are refusing to surrender at his behest, some sinful passion, maybe, or some animosity, some hope, perhaps some ambition or your reason?...How can you hope to enter into communion with Him when at some point in your life you are running away from Him?” Later, he explains that disobedience for the Christian means “you are trying to keep some part of your life under your own control. That is what is preventing you from listening to Christ and believing in His grace. Your difficulty is your sins.”
Then I read more about myself. This is hard to read!