From Luke 9:1-6
'Jesus called the Twelve together and gave them power and authority over all devils and to cure diseases, and he sent them out to proclaim the Kingdom of God and to heal.'
In today's Gospel passage Jesus calls the disciples together and instructs them to have authority over evil and to cure diseases and heal. It's the kind of ministry Jesus has been undertaking since his Baptism in the Jordan. And he now wants others to do the same. Later in scripture Luke will speak about the mission of the seventy-two disciples. Both of these passages compliment each other and reveal a lot to us about the mission of the Church.