Matthew 17:17-19

Amplified Bible

¹⁷ And Jesus answered, “You unbelieving and perverted generation, how long shall I be with you? How long shall I put up with you? Bring him here to Me.” ¹⁸ Jesus rebuked the demon, and it came out of him, and the boy was healed at once.

¹⁹ Then the disciples came to Jesus privately and asked, “Why could we not drive it out?”