Mark 9:28-30

21st Century King James Version

²⁸ And when He had come into the house, His disciples asked Him privately, “Why could not we cast him out?”

²⁹ And He said unto them, “This kind can come forth by nothing but by prayer and fasting.”

³⁰ And they departed thence and passed through Galilee, and He would not that any man should know it.