Cast your mind back to the invitation of Jesus that ended with these words “and I will give you rest.” Think closely and critically about those words and the importance of those words to those for whom it was meant. It was an invitation to participate in the life that God had designed- the life that was created to suspend the effects of the fall. Jesus Himself was living in this rest. He had from the place of this rest, accomplished great feats that made many marvel at what kind of person He really was.
Jesus was a wonder to those around Him. They really could not understand the source of His brilliance, His power, His presence, and His ability. Every time Jesus came on the scene, He always left them marveling and wondering. It was therefore a watershed moment when He invited us to participate in the same rest that He was made up of.
Jesus raised His disciples to always expect miracles. Hence when they came back rejoicing that the demons were subject to them, He had to refocus their minds. Why? Because the supernatural was for the bystanders to see and believe and not for the validation of those who are already home. Our faith in the finished work is enough for our validation and nothing more.