Have you ever wondered why the Jewish Sabbath begins on sundown the night before?  Why sundown?  I think I found out why in Nehemiah.  Check out this scripture:

 

Neh 13:15-22

 

15 In those days I saw men in Judah treading winepresses on the Sabbath and bringing in grain and loading it on donkeys, together with wine, grapes, figs and all other kinds of loads. And they were bringing all this into Jerusalem on the Sabbath. Therefore I warned them against selling food on that day. 16 Men from Tyre who lived in Jerusalem were bringing in fish and all kinds of merchandise and selling them in Jerusalem on the Sabbath to the people of Judah. 17 I rebuked the nobles of Judah and said to them, "What is this wicked thing you are doing — desecrating the Sabbath day? 18 Didn't your forefathers do the same things, so that our God brought all this calamity upon us and upon this city? Now you are stirring up more wrath against Israel by desecrating the Sabbath."

19 When evening shadows fell on the gates of Jerusalem before the Sabbath, I ordered the doors to be shut and not opened until the Sabbath was over. I stationed some of my own men at the gates so that no load could be brought in on the Sabbath day. 
NIV
Leslie