Jesus is not advocating a community of sightless and handless believers. He is flashing lights and sounding sirens to warn that sin is still serious for his followers. Disobedience is destructive. God invites us to affirm life through obedience as we move with him. In the long-distance run with God, obedience is the eventual proof of belief.
Disobedience becomes the undeniable evidence of unbelief.
The pattern of growth for the Christian will be to increase the consistency of obedience. Belief and obedience are as indispensable to one another as a husband and a wife. Without both a husband and wife, there is no marriage. Without a union of belief and obedience, there can be no following Jesus. Kierkegaard understood the relationship between them.