Doctrine, False—Contagion of – Charles Spurgeon

SIN is like the bale of goods which came from the east to this city in the olden time, which brought the pest in it. Probably it was but a small bale, but yet it contained in it the deaths of hundreds of the inhabitants of London. In those days one piece of rag carried the infection into a whole town. So, if you permit one sin or false doctrine in a church knowingly and wittingly, none can tell the extent to which that evil may ultimately go. The church, therefore, is to be purged of practical and doctrinal evil as diligently as possible. That sour and corrupting thing which God abhors must be purged out, and it is to be the business of the Christian minister, and of all his fellow helpers, to keep the church free from it.