As Jesus begins His public ministry, His message is one of repentance and belief.  He then calls disciples to follow Him.  Fishermen who were called to be fishers of men.  There are many different callings in life.  As we explore the call of the disciples, we can also look at how God calls us, because when people come up to Jesus and say, "I will follow you" most of the time it doesn't work out in their favor.