Mark 9:17-19

New American Standard Bible

¹⁷ And one person from the crowd answered Him, “Teacher, I brought You my son, because he has a spirit that makes him unable to speak; ¹⁸ and ^[a]whenever it seizes him, it slams him to the ground, and he foams at the mouth and grinds his teeth and becomes stiff. And I told Your disciples so that they would cast it out, but they could not do it.” ¹⁹ And He answered them and *said, “O unbelieving generation, how long shall I be with you? How long shall I put up with you? Bring him to Me!”