No other day has ever been sanctified as the day of rest. The Sabbath Day begins at sundown on Friday and ends at sundown on Saturday. Genesis 2:1-3; Exodus 20:8-11; Isaiah 58:13-14; 56:1-8; Acts 17:2; Acts 18:4, 11; Luke 4:16; Mark 2:27-28; Matthew 12:10-12; Hebrews 4:1-11; Genesis 1:5, 13-14; Nehemiah 13:19.

What time does day start in the Bible?

The first "day" begins with darkness before light (Genesis 1:2-3). Then, after God brought "light," the Bible defines a day as such: "And there was evening and there was morning, the first day." This phrase is repeated several times (1:8; 1:13; 1:19; 1:23; 1:31).

What time does the Hebrew day begin?

Days. Based on the classic rabbinic interpretation of Genesis 1:5 ("There was evening and there was morning, one day"), a day in the rabbinic Hebrew calendar runs from sunset (the start of "the evening") to the next sunset.