'Fasting' in the Bible

When I heard these words, I sat down and wept. I mourned for a number of days, fasting and praying before the God of heaven.

On the twenty-fourth day of this month the Israelites assembled; they were fasting, wearing sackcloth, and had put dust on their heads.

in order to confirm these days of Purim at their proper time just as Mordecai the Jew and Queen Esther had established them and just as they had committed themselves and their descendants to the practices of fasting and lamentation.

Yet when they were sick,my clothing was sackcloth;I humbled myself with fasting,and my prayer was genuine.

My knees are weak from fasting,and my body is emaciated.

so you must go and read from the scroll—which you wrote at my dictation—the words of the Lord in the hearing of the people at the temple of the Lord on a day of fasting. You must also read them in the hearing of all the Judeans who are coming from their cities.

Then the king went to his palace and spent the night fasting. No diversions were brought to him, and he could not sleep.

So I turned my attention to the Lord God to seek Him by prayer and petitions, with fasting, sackcloth, and ashes.

Even now—this is the Lord’s declaration—turn to Me with all your heart,with fasting, weeping, and mourning.