After having trained his apostles in his teachings, Jesus sends them on a trial missionary journey. They are not to carry anything that could encumber them in their work.
Baggage is a handicap for a person with a mission.
The very fact that they will be living by faith will be a sign to others of the efficacy of their message. We also see that Jesus institutes the Christian sacrament of anointing by giving his apostles power to heal with oil. After having trained his apostles in his teachings, Jesus sends them on a trial missionary journey. They are not to carry anything that could encumber them in their work. Baggage is a handicap for a person with a mission.