How Long?

¹⁴ And when they came to the disciples, they saw a great crowd around them, and scribes arguing with them. ¹⁵ And immediately all the crowd, when they saw him, were greatly amazed and ran up to him and greeted him. ¹⁶ And he asked them, “What are you arguing about with them?” ¹⁷ And someone from the crowd answered him, “Teacher, I brought my son to you, for he has a spirit that makes him mute. ¹⁸ And whenever it seizes him, it throws him down, and he foams and grinds his teeth and becomes rigid. So I asked your disciples to cast it out, and they were not able.” ¹⁹ And he answered them, “O faithless generation, how long am I to be with you? How long am I to bear with you? Bring him to me.” ²⁰ And they brought the boy to him. And when the spirit saw him, immediately it convulsed the boy, and he fell on the ground and rolled about, foaming at the mouth. ²¹ And Jesus asked his father, “How long has this been happening to him?” And he said, “From childhood. ²² And it has often cast him into fire and into water, to destroy him. But if you can do anything, have compassion on us and help us.” ²³ And Jesus said to him, “‘If you can’! All things are possible for one who believes.” ²⁴ Immediately the father of the child cried out and said, “I believe; help my unbelief!” ²⁵ And 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 And 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 arose. ²⁸ And when he had entered the house, his disciples asked him privately, “Why could we not cast it out?” ²⁹ And he said to them, “This kind cannot be driven out by anything but prayer.” – Mark 9:14-29 ESV

The next day (Luke 9:37), when Jesus, Peter, James, and John rejoined the other disciples, they found chaos and confusion as a large crowd encircled the other nine disciples, who were in a heated argument with the scribes. But as soon as Jesus arrived, He became the focus of attention, drawing the crowd like moths to a flame.

Like a father coming home to find his children in an unexpected predicament, Jesus tried to discern the cause of the trouble. It didn’t take Him long to discover the conflict involved His disciples. The rest of the crowd were like rubberneckers at an accident, drawn by the spectacle and curious to see what would happen next. When Jesus asked what was causing the argument, a man in the crowd spoke up.

“Teacher, I brought my son so you could heal him. He is possessed by an evil spirit that won’t let him talk. And whenever this spirit seizes him, it throws him violently to the ground. Then he foams at the mouth and grinds his teeth and becomes rigid.” – Mark 9:17-18 NLT

This father came expecting to find Jesus, but instead he encountered the nine disciples Jesus had left behind. In his gospel account, Matthew describes the man kneeling at Jesus’ feet, showing his high regard for Jesus and his belief that Jesus could help him. He brought his son to Jesus for healing, but when he discovered Jesus was gone, he turned to the disciples for help. However, they weren’t up to the task.

“I asked your disciples to cast out the evil spirit, but they couldn’t do it.” – Mark 9:18 NLT

Disappointed that he couldn’t find Jesus, the anxious father turned to the disciples for help. The text makes it clear that these men made a valiant effort to cast the demon from the man’s son, but without success. Their failure is so significant because Jesus had given all the disciples authority to cast out demons (Mark 3:15). When Jesus sent them out in pairs to preach, teach, and heal, they had successfully demonstrated that authority. Mark reports that “they cast out many demons and anointed with oil many who were sick and healed them” (Mark 6:13 ESV).

Yet, on this occasion, their efforts fell short. The argument that ensued must have begun when the disciples started making excuses for their failed attempts to exorcise the demon. Perhaps they began to question whether this man or his son had broken a particular Mosaic law, and whether that violation had caused the boy’s condition. They were clearly frustrated by their inability to exercise authority over the demon and were trying to figure out what was standing in their way. When all the dust settled, they even asked Jesus, “Why couldn’t we cast out that evil spirit?” (Mark 9:28 NLT).

The scribes may have been dragged into the argument to explain the Mosaic Law and give their opinions on the boy’s condition and the demon’s persistent power over him. The whole scene had quickly devolved into a shouting match, with each side pointing fingers at the other. All the while, the boy remained demon-possessed.

Then Jesus, the one who calmed the wind and waves, entered this storm of confusion and chaos and proved He alone could bring peace and calm. Jesus, disappointed by the sordid scene before Him, voiced His frustration.

“O faithless generation, how long am I to be with you? How long am I to bear with you? Bring him to me.” – Mark 9:19 ESV

To fully appreciate Jesus’ words, one must recall the transfiguration that Jesus had just experienced on the mountaintop. For a brief moment, Jesus was transformed into His future, glorified state. Two of the great patriarchs of the Hebrew people, Moses and Elijah, joined Him, and they discussed His coming “exodus,” or departure, from this life. It was a much-needed reminder that His days on this earth were coming to a close and that He would soon return to His Father’s side. But when He descended from the mountain, Jesus encountered a scene of faithlessness and spiritual apostasy.

This recalls a similar scene from hundreds of years earlier. Moses, the great deliverer of the Hebrew people, had just spent 40 days and nights atop Mount Sinai, where he had enjoyed intimate communion with God and received the Ten Commandments. But when He descended from the mountain, he found the people of Israel worshiping a false god. He returned to chaos and confusion, brought on by the faithlessness of God’s people.

After descending from the mountain of transfiguration, Jesus witnessed a similar scene. Faith was in short supply, and the enemy was having his way among God’s people. The disciples’ inability to cast out the demon had left the boy still possessed and persecuted. More importantly, their lack of faith left the people in doubt and uncertainty.

But Jesus stepped into the darkness of the moment and focused His full attention on the boy’s condition. The father provided Jesus with a blow-by-blow description of his son’s condition, explaining in detail how relentlessly the demon had tormented his child. You can sense his growing desperation as he begs Jesus for help.

“But if you can do anything, have compassion on us and help us.” – Mark 9:22 ESV

At this point, he is unsure if Jesus can do anything about his son’s condition; he is losing hope. But Jesus gently rebukes the man’s timid, half-hearted faith by repeating the father’s doubtful statement, “If you can!” One can almost sense Jesus’ exasperation at the faithlessness around Him. As always, His primary concern was the 12 men He had chosen as His disciples. This whole situation resulted from their lack of faith. So when Jesus said, “All things are possible for one who believes” (MRK 9:23 ESV), He was addressing the boy’s father, but also His disciples. Jesus was saying that it wasn’t a matter of whether He could heal the boy, but whether He would. This was less an indictment of the man’s faith than an exposure of his misunderstanding of who Jesus was.

The father, anxious to see his son healed, cried out, “I believe; help my unbelief!” (Mark 9:24 ESV). He desperately wanted to believe that Jesus could heal his son, but he had seen the disciples try and fail. He remained hopeful but apprehensive and asked Jesus to remove all doubt by casting the demon out of his son. And Jesus did just as the man wished. Addressing the demon directly, Jesus commanded, “You mute and deaf spirit, I command you, come out of him and never enter him again” (Mark 9:25 ESV).

Convulsing the boy one last time, the demon obeyed and left him in a catatonic state that made it appear as if he were dead. But Jesus raised the boy, restoring him to full health.

Jesus turned this entire scene into a primer on faith. But His focus was not on the father; He was exposing His disciples’ faithlessness. Matthew records that after Jesus exorcised the demon, the disciples asked why they had failed. His response must have left them stunned and confused.

“Because of your little faith. For truly, I say to you, if you have faith like a grain of mustard seed, you will say to this mountain, ‘Move from here to there,’ and it will move, and nothing will be impossible for you.” – Matthew 17:20 ESV

Jesus had told the father, “All things are possible for one who believes” (Mark 9:23 ESV). Jesus emphasized His own faith, not the father’s. Jesus fully believed He had the power and authority to cast out the demon, and He proved it by doing so. He knew who He was and what He could accomplish with the power God had given Him. But the disciples were another matter; their belief had proven insufficient. But the problem wasn’t the amount of their faith; it was their inability to understand the true source of their power. According to Jesus, even the smallest faith, combined with God’s power, could “move mountains.” Faith is not a resource we possess or produce; it is confidence in God’s power.

Their ability to cast out demons did not reside in themselves; it was not a power they possessed, but it was meted out to them by God. That is why Jesus told them that “This kind cannot be driven out by anything but prayer” (Mark 9:29 ESV). They had failed to understand that their earlier experience of casting out demons had been authorized by Jesus and made possible by God’s power, not their own. But they mistakenly assumed they personally possessed that power; that it was permanently resident within them.

In trying to cast out the demon, they had put their faith in themselves. Like the Israelites in the wilderness, the disciples ended up worshiping a false god: themselves. They thought they possessed power, but discovered they were powerless. So, Jesus reminded them that even the smallest faith in God’s power could produce the greatest miracles. Jesus believed He had authority over the demon because He had God’s power and authority at His disposal. His life proved that “All things are possible for one who believes.”

The transfiguration was a mountaintop experience for Jesus. He had communed with His Heavenly Father and two of the great patriarchs of the Hebrew faith. But when it was over, He received a stark reminder of the spiritual darkness He had come to dispel. That is why He said, “You faithless people! How long must I be with you? How long must I put up with you?” (Mark 9:19 NLT). During His brief stay on the mountain, He, Elijah, and Moses had discussed His coming death and departure. His mind was focused on His God-ordained mission to sacrifice His life on behalf of sinful men. He knew His death was imminent and imperative because “without the shedding of blood there is no forgiveness of sins” (Hebrews 9:22 ESV). As long as He remained on earth, He knew the people would continue to struggle with doubt, fear, and faithlessness. Even His disciples would continue to wrestle with His identity and misunderstand His mission because they lacked the indwelling presence of the Holy Spirit. 

Jesus knew His disciples were operating at a deficit because they were operating in the flesh. Their faithlessness was a byproduct of their own impotence. That is why Jesus later told them, “I will send the Holy Spirit, just as my Father promised. But stay here in the city until the Holy Spirit comes and fills you with power from heaven” (Luke 24:49 NLT). After His resurrection and before His ascension, Jesus promised them,  “You will receive power when the Holy Spirit comes upon you…” (Acts 1:8 NLT).

The Holy Spirit was the missing element. Without Him, the disciples would remain powerless and faithless. But when He came, they would be radically transformed and equipped for service.

“…when the Father sends the Advocate as my representative—that is, the Holy Spirit—he will teach you everything and will remind you of everything I have told you.” – John 14:29 NLT

“And when you are brought to trial in the synagogues and before rulers and authorities, don’t worry about how to defend yourself or what to say, for the Holy Spirit will teach you at that time what needs to be said.” – Luke 12:11-12 NLT

In the meantime, Jesus continued to teach and model what dependence on the Spirit looked like. He carried out his entire ministry in the power of the Spirit. From the moment He came up out of the waters of the Jordan, Jesus was “led by the Spirit” (Matthew 4:1 ESV). Having set aside His divine privileges, Jesus relied on the Holy Spirit’s power throughout His earthly ministry. He modeled the Spirit-filled life that every believer would experience after His death and resurrection. The disciples would have to wait to experience that kind of life-transforming power, but it wouldn’t be long, as Jesus would soon make clear.

English Standard Version (ESV) The Holy Bible, English Standard Version. ESV® Permanent Text Edition® (2016). Copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.