However, this kind does not go out except by prayer and fasting.”

So He said to them, “This kind can come out by nothing but prayer and fasting.”

and this woman was a widow of about eighty-four years, who did not depart from the temple, but served God with fastings and prayers night and day.

Jesus Is Questioned About Fasting

Then they said to Him, “Why do the disciples of John fast often and make prayers, and likewise those of the Pharisees, but Yours eat and drink?”

Do not deprive one another except with consent for a time, that you may give yourselves to fasting and prayer; and come together again so that Satan does not tempt you because of your lack of self-control.