For Catholics it is traditionally known as the Third Commandment from God (in some churches it is listed as the fourth). It is the command from God to "Keep Holy the Sabbath", to formally set aside one period of time each week to rest from our work, and to celebrate and thank Him for all that He has given us.
For some, the sabbath observance comes on Fridays or Saturdays. For Catholics and many others, this day comes on Sunday.
For police officers, the chance to attend Mass (or to observe Shabbat in Judaism) should be something that we look forward to each week. It is our opportunity to be rested and refreshed in and with the Lord.
The work schedule of a police officer, who does the necessary work of protecting and serving the public, is such that we cannot frequently take a Saturday or Sunday completely away from the workplace.
Catholics are heartened by the fact that almost all churches now offer both a Saturday evening "Vigil Mass" along with the usual Sunday services. Thus, no Catholic officer should use work as an excuse to miss the weekly Mass obligation.
In Exodus chapter 20, Moses has climbed Mount Sinai. The people waited down below, since God had previously warned them to "set limits around the mountain to make it sacred".
As Moses stood in the presence of God Himself, the people trembled at the experience. The mountain was enveloped by thunder and lightening. The mountain itself appeared to be smoking, and a great trumpet blast was heard from the heavens. Here in the presence of the Almighty, Moses was given the basic laws of God by which man was to live.
