This event occurs early in Jesus' ministry, shortly after the calling of the disciples. These men have ben following Jesus for only a short while, but they have watched him heal the sick and teach across the countryside. Still, their education is incomplete. They haven't heard all of Jesus' teachings or seen all of his healings, nor have they seen him fulfill the expectations they have for their Messiah. Yet, they do what they are told. Even with little training, they are willing to go out to teach and heal in the name of Jesus Christ. They obey, taking nothing with them, and having faith that God will be with them.
We, too, are called to minister in the same way. True, we are imperfect people, we have flaws and commit sins, but we are still called to minister for Christ. We may not feel fully prepared, and God may still have more experiences that will prepare us later on, but we are still called, today, at this moment, to proclaim the word of God and to bring about the kingdom of God on earth. God will be with us as we do.