📖 Biblical Definition
The Hebraic calendar is the lunisolar calendar of the Mosaic law — still used liturgically by Jews and indispensable to understanding biblical chronology. Twelve lunar months (each beginning at new moon, about 29.5 days) make up roughly 354 days; a thirteenth month (Adar II / Veadar) is intercalated in seven of every nineteen years to keep the calendar synchronized with the solar year. The religious year begins in Nisan (March-April, with Passover on the 14th), counting forward to Tishri (September-October); the civil year begins in Tishri (with Rosh Hashanah on the 1st). The major feasts cluster: Passover, Unleavened Bread, Firstfruits, Weeks (Pentecost), Trumpets, Atonement, Tabernacles. Christ fulfills the feast cycle in His own coming.
📜 Webster 1828 Definition
The lunisolar Mosaic calendar; basis of the feasts.
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The lunisolar calendar prescribed in Mosaic law: twelve lunar months (Nisan, Iyar, Sivan, Tammuz, Av, Elul, Tishri, Cheshvan, Kislev, Tevet, Shevat, Adar) with a thirteenth (Adar II) intercalated seven times in every nineteen-year cycle to keep the calendar in sync with the solar year. The religious year starts in Nisan (spring); the civil year in Tishri (autumn). The calendar's structure encodes the feast cycle — spring, summer, fall — that frames Israel's worship-year.
📖 Key Scripture
Exodus 12:2 — "This month (Nisan) shall be unto you the beginning of months: it shall be the first month of the year to you."
Leviticus 23:1-44 — "[The whole chapter detailing the feasts of the LORD according to their seasons.]"
Galatians 4:4 — "But when the fulness of the time was come, God sent forth his Son, made of a woman, made under the law."
⚠️ Modern Corruption
Christian use of Gregorian calendar disconnects readers from the Hebraic calendar's structure, which the Bible's own chronology assumes.
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The Bible's calendar is Hebraic. Passover is in Nisan; Pentecost is fifty days after Passover Sabbath; Yom Kippur is on the tenth of Tishri; Sukkot starts on the fifteenth. Reading these references through Gregorian lenses ("April" or "October") obscures the structure.
Recover the calendar: the spring-summer-fall feast cycle is the Bible's own rhythm. The fullness of the time (Gal 4:4) was Hebraic-calendar specific.
🔗 Greek & Hebrew Roots
Hebrew calendar months and feast cycle.
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['Hebrew', 'H2320', 'chodesh', 'new moon, month']
['Hebrew', 'H4150', 'moed', 'appointed time, feast']
Usage
"Twelve lunar months + intercalary Adar II."
"Religious year starts Nisan; civil year Tishri."
"Bible chronology assumes Hebraic dating."