Matthew 17:17-19

New Revised Standard Version, Anglicised Catholic Edition

¹⁷ Jesus answered, ‘You faithless and perverse generation, how much longer must I be with you? How much longer must I put up with you? Bring him here to me.’ ¹⁸ And Jesus rebuked the demon,^[a] and it^[b] came out of him, and the boy was cured instantly. ¹⁹ Then the disciples came to Jesus privately and said, ‘Why could we not cast it out?’