Jesus whose obedience to the will of the Father should always be the pattern of our own obedience to Him.
Jesus wants disciples who will finish what they begin and, thus, can be counted upon to be true to their word. Are you one of this kind of people?
Jesus makes it clear that becoming His disciple is a serious decision and it is best if we do not look back. There are temptations for those who look back because not that many people take seriously the call to discipleship. When a person looks back, he will see all those who have not taken up the call, living lives that may be far more attractive.