25 When Jesus saw that a crowd came running together, he rebuked the unclean spirit, saying to it, “You mute and deaf spirit, I command you, come out of him, and never enter him again!” 26 After crying out and convulsing him terribly, it came out, and the boy was like a corpse, so that most of them said, “He is dead.” 27 But Jesus took him by the hand and lifted him up, and he was able to stand. 28 When he had entered the house, his disciples asked him privately, “Why were we not able to cast it out?” 29 He said to them, “This kind can come out only through prayer.”
When we have given up on our power to affect healing or (in this case) deliverance, that’s when Jesus can step in and get the job done. Jesus gets the glory and we avoid the pride that can come to those with a healing ministry. His intervention is something we should seek. That makes our present relationship with the Holy Spirit a tricky one. The Holy Spirit gifts some people with power ministries. It is OK to be used by God in such ministries. They have not ceased, and they will not cease until the Holy Spirit ceases. But so many use those gifts in a prideful, self-aggrandizing fashion. They will have to answer to their Lord for using the Holy Spirit for their own gain. Most of us do not have that problem. Like most of the disciples in this story, most of us will come to our limit, and plead for Jesus to intervene. Fear not, he is in control. He wants us to pray and watch.
LORD, if you gift us, use us to your glory. If you do not, give us the wisdom to pray and watch you intervene.
 some manuscripts add και νηστεια – and fasting.