Now observe, this slander is compared in the text to poison--"the tongue is an unruly evil, full of deadly poison." The deadliest poisons are those for which no test is known: there are poisons so destructive that a single drop insinuated into the veins produces death in three seconds, and yet no chemical science can separate that virus from the contaminated blood, and show the metallic particles of poison glittering palpably, and say, "Behold, it is there!" In the drop of venom which distils from the sting of the smallest insect, or the spikes of the nettle-leaf, there is concentrated the quintessence of a poison so subtle that the microscope cannot distinguish it, and yet so virulent that it can inflame the blood, irritate the whole constitution, and convert day and night into restless misery. In St. James's day, as now, it would appear that there were idle men and idle women, who went about from house to house, dropping slander as they went, and yet you could not take up that slander and detect the falsehood there. You could not evaporate the truth in the slow process of the crucible, and then show the residuum of falsehood glittering and visible. You could not fasten upon any word or sentence, and say that it was calumny; for in order to constitute slander it is not necessary that the word spoken should be false--half truths are often more calumnious than whole falsehoods. It is not even necessary that a word should be distinctly uttered; a dropped lip, an arched eyebrow, a shrugged shoulder, a significant look, an incredulous expression of countenance, nay, even an emphatic silence, may do the work: and when the light and trifling thing which has done the mischief has fluttered off, the venom is left behind, to work and rankle, to inflame hearts, to fever human existence, and to poison human society at the fountain springs of life. Very emphatically was it said by one whose whole being had smarted under such affliction, "Adder's poison is under their lips." The second license given to the tongue is in the way of persecution: "therewith curse we men which are made after the similitude of God." "We!"--men who bear the name of Christ--curse our brethren! Christians persecuted Christians. Thus even in St. James's age that spirit had begun, the monstrous fact of Christian persecution; from that day it has continued, through long centuries, up to the present time. The Church of Christ assumed the office of denunciation, and except in the first council, whose object was not to strain, but to relax the bonds of brotherhood, not a council has met for eighteen centuries which has not guarded each profession of belief by the too customary formula, "If any man maintain otherwise than this, let him be accursed."