Just as the body when at a low vitality is susceptible to colds, so it may as truly be said of the soul, when impoverished it falls prey to temptation and sin.
The common theory that all colds are the result of exposure is a great mistake, inasmuch as exposure is not the direct cause of the trouble. Colds are caused by hostile microbes, or bacteria, which gain a foothold at a time when our vitality has been lowered by exposure. But there are many quarters of the globe where one finds it impossible to catch cold, simply by reason of the fact that there is no cold to catch.
''Peary and his men during the months they spent in the arctic regions were immune from cold, tho they were constantly enduring exposure of every kind. They passed day after day in clothes so saturated with perspiration that by day they froze into a solid mass, so to speak, and the clothes cut into their flesh. And at night, in their sleeping-bags, the first hour was spent in thawing out. They returned to civilization none the worse in health, but soon contracted severe colds upon reaching there. People were much amused by the press accounts of how Commander Peary had taken cold while proceeding to dine with a friend in a suburb of Washington, the taxicab which was conveying him and his wife having broken down during a snow flurry in December.'' Harper's Weekly.
He went on: ''What comes out of a person is what defiles them. For it is from within, out of a person's heart, that evil thoughts come: sexual immorality, theft, murder, adultery, greed malice, deceit, lewdness, envy, slander, arrogance and folly." Mark 7: 20:23