And he called the twelve together and gave them power and authority over all demons and to cure diseases, and he sent them out to proclaim the kingdom of God and to heal. And he said to them, “Take nothing for your journey, no staff, nor bag, nor bread, nor money; and do not have two tunics. And whatever house you enter, stay there, and from there depart. And wherever they do not receive you, when you leave that town shake off the dust from your feet as a testimony against them.” And they departed and went through the villages, preaching the gospel and healing everywhere. Luke 9:1-6.
When I was a boy, invoking the name of my father gave me power over my siblings. If I gave commands in my own name, I usually got an argument. I also discovered that saying, “If you don’t stop doing that, I’m gonna tell Dad,” was not as powerful as, “Dad said to stop doing that.” One was assumed authority based on my knowledge of what Dad wanted. The other was direct authority. That is the kind of authority Jesus gave His disciples.
Today we have both, because even the assumed authority, based on your knowledge of the will of God, carries the same weight as, “Jesus said to stop doing that,” because He is with us. “So then the Lord Jesus, after he had spoken to them, was taken up into heaven and sat down at the right hand of God. And they went out and preached everywhere, while the Lord worked with them and confirmed the message by accompanying signs.” (Mark 16: 19-20).