Still taught in new testament
Acts 9:20 Acts 14:1 Acts 17:1-3 Acts 18:4-26
LUKE 4:16,32 Acts 13:14-52 Acts 15:21
   SABBATH DAY OBSERVANCE

MATTHEW    27:62   12:1-8 12:10-12  24:20   5:18 cross 

 MARK           15:42   6:2    2:27-28  16:1

LUKE   23:54 4:16  4:31  6:6  13:10  6:1-10  14:1-6  23:54:56

JOHN 19:31  5:5-14  7:21:24  9:1-34  19:31

ACTS  13:14  13:27 13:42,44 15:21  16:13  17:2  18:4

Col. 2:16   HEBREWS 4:4,9    REV 1:10

Acts 1:12 SABBATH's day's journey is only 2,000 steps or one half mile.  (youngs bible dictionary)

I looked also in my youngs bible dictionary about sabbath 
and it said two verses about the first day of the week also.
ACTS 2:1  1st corinthians 16:1,2  This verse Paul
waited till the first day of the week because according to Jewish law you were not allowed to handle money 
 on the sabbath day.
Duteronomy 27:14-26-28:1-14-28:15-68
Hebrews        3:7-19
EXODUS 12:49 
Romans 2:13