How to Fast Biblically?

Fasting in Scripture is always tied to a spiritual goal. It is not dieting; it is devotion. Matthew 6:16–18 records Jesus' teaching: "When ye fast, be not, as the hypocrites, of a sad countenance... But thou, when thou fastest, anoint thine head, and wash thy face; That thou appear not unto men to fast, but unto thy Father which is in secret." The emphasis is on the heart — fasting is between the believer and God. The Bible describes several kinds of fasts. The normal fast involves abstaining from all food but not water (Esther 4:16; Acts 13:2–3). The partial fast restricts certain foods (Daniel 1:12; 10:3). The absolute fast abstains from both food and water, but only for short periods due to danger (Esther 4:16; Acts 9:9). Jesus' forty-day fast (Matthew 4:2) was supernatural and should not be imitated without medical supervision. The purposes of fasting include humbling oneself before God (Psalm 35:13), seeking deliverance (2 Chronicles 20:3–4), mourning sin (Joel 2:12–13), preparing for ministry (Acts 13:3), and gaining spiritual clarity (Daniel 9:3). Fasting does not manipulate God; it disciplines the flesh so the spirit may hear more clearly. Isaiah 58:3–7 rebukes empty ritual fasting divorced from justice and compassion. The fast God chooses is to "loose the bands of wickedness, to undo the heavy burdens, and to let the oppressed go free." Those with medical conditions, the elderly, pregnant or nursing mothers, and children should not attempt prolonged fasts without medical advice. The principle of fasting — setting aside earthly sustenance to focus on God — can be practised in modified forms. The heart matters more than the duration.