According to Luke, the mandate given to the twelve at their commissioning was to

According to Luke's account, the mandate given to the twelve at their commissioning was to preach the kingdom of God and heal. This means that they were sent out by Jesus with the mission of spreading the good news of God's kingdom and demonstrating its power through acts of healing. They were to proclaim the message of salvation to all people, and to show that the kingdom of God was real and present in their midst by healing the sick and performing miracles. While they were certainly called to do good to all people, their primary focus was on spreading the message of the kingdom and demonstrating its power.