Her priests have violated My law and profaned My holy things; they have not distinguished between the holy and unholy, nor have they made known the difference between the unclean and the clean; and they have hidden their eyes from My Sabbaths, so that I am profaned among them. Ezekiel 22:26
It is not a legalistic approach the Lord is advocating. All of life is holy. Every moment is to be in some way a reverent one. How else do we pray without ceasing?
