Mark 9:20-23

So they brought the boy. But when the evil spirit saw Jesus, it threw the child into a violent convulsion, and he fell to the ground, writhing and foaming at the mouth. “How long has this been happening?” Jesus asked the boy’s father. He replied, “Since he was a little boy. The spirit often throws him into the fire or into water, trying to kill him. Have mercy on us and help us, if you can.” “What do you mean, ‘If I can’?” Jesus asked. “Anything is possible if a person believes.”