Neither can it be presumed that the descendants of such persons, trained, as ought to be supposed, with faith and prayer, would possess a spirit so selfish and different from that of their fathers, as to prove the extermination of the heathen. And if such is the necessary event, what is the conclusion at which we must arrive? It seems certain, that a mere handful of missionaries cannot put forth the instrumentality which, according to God's usual providence, is necessary to save them: that a great number and variety of laborers are needed to do the work. Let us be slow, therefore, to trust in the objection; for if it must be admitted, the lawful inference will not necessarily be, that Christians of all classes and in great numbers should not go forth to the heathen; but the inquiry will arise, whether heathen nations as nations must not cease to exist, and remnants of them only be saved--a painful and dread alternative, from which every benevolent heart must instinctively recoil. _There are other reasons why laymen should engage in the work of missions._ The work of the world's conversion is too great, too momentous and too pressing, to admit of exemption simply on the ground of profession or employment. When the liberties of a people are at stake, how few are excused from the field of battle? But now the question is not one of temporal liberty: it is whether six hundred millions of the human race shall be won to the company of the redeemed on high, or left to sink in the untold agonies of the world of woe. In this unparalleled emergency, when the question is, whether the destiny of a world shall be heaven or hell, who can be excused on so slight a ground as that of profession or employment? A few ministers cannot do the work. It is too great. It is presumptuous to expect, that a speedy and complete triumph is to be effected by a few missionaries of the right stamp going through the length and breadth of Satan's extensive and dark empire, and sounding as they go the trumpet of the Gospel around his strong fortifications and deep intrenchments. Such an expectation places an immeasurable disparity between the means and the end. It supposes it to be so easy to effect a transformation of heathen society, heathen habits, heathen minds, and heathen character, and to raise them up from a degradation many ages deep, that a few sounds only from the herald of salvation, as he passes on his way, are sufficient. "Leviathan is not thus tamed." The prince of the power of the air is not thus vanquished.