Mark 9:28-30

American Standard Version

²⁸ And when he was come into the house, his disciples asked him privately, ^[a]How is it that we could not cast it out? ²⁹ And he said unto them, This kind can come out by nothing, save by prayer^[b].

³⁰ And they went forth from thence, and passed through Galilee; and he would not that any man should know it.