'Fasting' in the Bible

And Jesus called unto him his disciples, and said, I have compassion on the multitude, because they continue with me now three days and have nothing to eat: and I would not send them away fasting, lest haply they faint on the way.

But this kind goeth not out save by prayer and fasting.

And John's disciples and the Pharisees were fasting: and they come and say unto him, Why do John's disciples and the disciples of the Pharisees fast, but thy disciples fast not?

and if I send them away fasting to their home, they will faint on the way; and some of them are come from far.

And when they had appointed for them elders in every church, and had prayed with fasting, they commended them to the Lord, on whom they had believed.

And while the day was coming on, Paul besought them all to take some food, saying, This day is the fourteenth day that ye wait and continue fasting, having taken nothing.