Mark 9:20-24

So they brought him to Jesus. As soon as the demon saw him, it threw the boy into convulsions. He fell to the ground, rolling around and foaming at the mouth. Jesus turned to the father and asked, “How long has your son been tormented like this?” “Since childhood,” he replied. “It tries over and over to kill him by throwing him into fire or into the water. But please, if you’re able to do something, anything—have compassion on us and help us!” Jesus said to him, “What do you mean ‘if’? If you are able to believe, all things are possible to the believer.” When he heard this, the boy’s father cried out with tears, saying, “I do believe, Lord; help my little faith!”