The duration of the season of Lent is based on the ancient church custom of requiring catechumens to undergo a forty-day period of doctrinal instruction and fasting before being baptized on the evening before Easter. This probationary period was called the quarantine (from the Latin word for forty). The number forty occurs frequently in both testaments of the Bible. It signifies the time that is required for discipline, testing, and separation prior to achieving a goal or new beginning. For example, we read in the Old Testament that it rained forty days and nights during the Great Flood (Genesis 7:12), Moses communed with God on Mount Sinai for forty days before receiving the Ten Commandments (Exodus 24:18), the people of Israel were forced to wander in the wilderness for forty years (Numbers 14:33-34), Elijah journeyed for forty days before he reached Mount Horeb and had a vision of God (1 Kings 19:8-9), and the inhabitants of Nineveh fasted and repented for forty days in response to the preaching of Jonah (Jonah 3:4-5). The outstanding instances of the number forty in the New Testament are the account of Christ's ordeal in the desert fasting, praying, and being tempted by the devil (Matthew 4:1-11; Mark 1:12-13; and Luke 4:1-13) and His various appearances to the apostles and others between His resurrection and ascension during which He strengthened their faith and prepared them for the coming of the Holy Spirit (Acts 1:3).
The duration of the season of Lent is based on the ancient church custom of requiring catechumens to undergo a forty-day period of doctrinal instruction and fasting before being baptized on the evening before Easter. This probationary period was called the quarantine (from the Latin word for forty). The number forty occurs frequently in both testaments of the Bible. It signifies the time that is required for discipline, testing, and separation prior to achieving a goal or new beginning. For example, we read in the Old Testament that it rained forty days and nights during the Great Flood (Genesis 7:12), Moses communed with God on Mount Sinai for forty days before receiving the Ten Commandments (Exodus 24:18), the people of Israel were forced to wander in the wilderness for forty years (Numbers 14:33-34), Elijah journeyed for forty days before he reached Mount Horeb and had a vision of God (1 Kings 19:8-9), and the inhabitants of Nineveh fasted and repented for forty days in response to the preaching of Jonah (Jonah 3:4-5). The outstanding instances of the number forty in the New Testament are the account of Christ's ordeal in the desert fasting, praying, and being tempted by the devil (Matthew 4:1-11; Mark 1:12-13; and Luke 4:1-13) and His various appearances to the apostles and others between His resurrection and ascension during which He strengthened their faith and prepared them for the coming of the Holy Spirit (Acts 1:3).