Peter and Andrew are not praying when Jesus finds them. They are working, throwing a net into the lake as they did every day. James and John are mending torn nets with their father. Nothing about the scene is religious, and that is exactly where the call comes.
Jesus does not take away what they know. They were fishermen and they will still be fishers, now of people. Everything they learned about patience, weather, teamwork and hauling in a heavy net will be put to new use. Following him changes the direction of a life without wasting what came before.
Most of us will not leave our jobs or families. But the call still comes in ordinary places: an office, a classroom, a kitchen. The question is whether we hear it there and let it change what we are working for. The first disciples answered at once. We can at least answer this week.