20 So they brought him. When the spirit saw Jesus, it immediately threw the boy into a convulsion. He fell to the ground and rolled around, foaming at the mouth. 21 Jesus asked the boy’s father, “How long has he been like this?” “From childhood,” he answered. 22 “It has often thrown him into fire or water to kill him. But if you can do anything, take pity on us and help us.” 23 “ ‘If you can’?” said Jesus. “Everything is possible for one who believes.” 24 Immediately the boy’s father exclaimed, “I do believe; help me overcome my unbelief!” ~ Mark 9:20-24
This father’s desperate plea reveals a struggle we can all relate to: the battle between faith and doubt. He brought his son to Jesus, confident in His power to heal. Why else would he come? He had likely heard stories of Jesus’ miracles—perhaps even knew someone touched by His hand. John tells us that Jesus performed so many wonders that the world couldn’t contain the books if they were all written down (John 21:25). So, this father arrived expecting a miracle. But when the disciples failed to cast out the demon, his confidence faltered. Doubt crept in, and he began to question Jesus’ authority, saying, “If you can do anything …”
Jesus’ response is striking: “If you can? All things are possible for one who believes.” The father’s words had betrayed his wavering faith, and Jesus called it out—not to condemn, but to challenge. Realizing his struggle, the father cried out for help with his unbelief. His story mirrors a challenge we often face today. We know God’s power. We’ve seen Him move. Yet, over time, familiarity can dull our expectations. Like this father, we can become “inoculated” against the fullness of God’s promises.
In the 18th century, doctors inoculated patients against smallpox by exposing them to a small dose of the disease, triggering immunity. Similarly, we can be around church, prayer, and God’s Word just enough to grow complacent. We’ve witnessed half-hearted faith and tepid prayers, and it numbs us to the miraculous. Doubt sneaks in, and we start to wonder if God will really act.
But Jesus offers a better way. He paid the ultimate price—not just for our salvation, but for our healing: spirit, soul, and body. Isaiah 53:5 proclaims, “By His stripes, we are healed.” The abundant life He promises includes freedom from sickness. So, if you’re battling illness today, don’t settle for doubt. Proclaim your healing, ask Jesus to uproot any unbelief, and trust in His finished work on the cross. Let’s reject inoculation and embrace the complete transformation God desires for us. Heavenly Father, help me with my unbelief. I know that for those who believe, all things are possible. Please help me reach that point so that I can live the abundant life that You promised. In Jesus’ name, I pray, amen.