The Sabbath is a beautiful and wonderful gift from our Master.  But there are 3 "pat answers" most Christians give as to why they only obey the
 "9" Commandments
instead of the
 "10" Commandments.

CLICK ON THIS LINK to read a 16 page article that goes through the  3 "pat answers" most often given as to why the 7th Day Sabbath was forsaken by the Chrisitan church, a brief history of the change (when and why it happened), and clear evidence to support why their is no biblical basis for the change. [Note: this may have a number of typo's I did not have time to edit it after quickly typing it up for my Seminary professor]