He that toucheth, shall be unclean. - Leviticus 15:7

There were doubtless great sanitary reasons for many of these enactments. This book is one of the greatest sanitary codes in existence. God made religious duty enforce regulations essential to the physical health and well-being of His people. But there were deeper reasons yet. The whole of these arrangements were contrived to teach profound lessons to us all of the nature and evil of sin, and of the need of being continually cleansed in the precious blood of Jesus Christ.

The unclean saul spreads uncleanness. - Whatever the ceremonially unclean touched, used, or sat on, was polluted. Even those who came into contact with him were defiled. How wary all true Israelites must have been of their associates, lest they should contract pollution! Let us adopt similar precautions, and not voluntarily associate with the unholy or unclean. And if our business calls us into their daily company, let us seek cleansing for ourselves as we return to our homes, that any adhering germs of evil may be removed.

The urgent demand for holiness. - The ordinary processes of life are not necessarily clean because they are natural. The foul heart may vitiate the most natural functions. We must bring the thought of God into the simplest, the commonest, and the most secret acts. Nothing is outside His jurisdiction. Though hid from sight, yet He is ever near the child of God. His grace, and blood, and cleansing, are always requisite, and ever ready. Amidst and after every act, incident, and episode of life, we should be quiet before God, considering if we have aught to confess, and asking to be ever kept from staining our white robes.