High Sabbath
A "High Sabbath" refers to an annual biblical festival (or High Holy Day) ordained in Leviticus 23, such as Passover, Yom Kippur, or Sukkot. Unlike the weekly Saturday Sabbath, a High Sabbath can fall on any day of the week. When it coincides with a weekly Sabbath, it is considered doubly sacred. [1, 2, 3, 4]
High Sabbaths are tied to agricultural harvests and redemptive events, requiring special rest and assembly observances distinct from the routine seventh-day Sabbath. For example, the Day of Atonement (Yom Kippur) is often called a "Sabbath of solemn rest", while the first and seventh days of the Feast of Unleavened Bread are also observed as High Sabbaths. The term can also informally refer to the High Holy Days of Rosh Hashanah and Yom Kippur. [1, 2, 3, 4, 5, 6]