Mark 9:19-21

Amplified Bible

¹⁹ He replied, “O unbelieving (faithless) generation, how long shall I be with you? How long shall I put up with you? Bring him to Me!” ²⁰ They brought the boy to Him. When the [demonic] spirit saw Him, immediately it threw the boy into a convulsion, and falling to the ground he began rolling around and foaming at the mouth. ²¹ Jesus asked his father, “How long has this been happening to him?” And he answered, “Since childhood.