For reactions involving oxygen, the gain of oxygen implies the oxidation of the atom or molecule to which the oxygen is added (and the oxygen is reduced). In organic compounds, such as butane or ethanol, the loss of hydrogen implies oxidation of the molecule from which it is lost (and the hydrogen is reduced).
In Ethiopian Orthodoxy, fasting (tsome) lasts for 55 continuous days before Easter (Fasika), although the fast is divided into three separate periods: Tsome Hirkal, eight days commemorating an early Christian figure; Tsome Arba, forty days of Lent; and Tsome Himamat, seven days commemorating Holy Week.
Ash Wednesday, a day of fasting, is the first day of Lent in Western Christianity. It occurs 46 days before Easter and can fall as early as February 4 or as late as March 10. Ash Wednesday is observed by many Western Christians, including Anglicans, Lutherans, Methodists, Presbyterians, Roman Catholics, and some Baptists. According to the canonical gospels of Matthew, Mark and Luke, Jesus Christ spent 40 days fasting in the desert, where he endured temptation by Satan. Lent originated as a mirro