Mark 9:28-30

²⁸And when hee was come into the house, his disciples asked him secretly, Why could not we cast him out?

²⁹And he saide vnto them, This kinde can by no other meanes come foorth, but by prayer and fasting.

³⁰And they departed thence, and went together through Galile, and hee would not that any should haue knowen it.