However sternly the sword of Joshua might fall, it struck not at the foreigner, as such, but at those tribes, guilty and therefore accursed of God, the cup of whose iniquity was full. And yet there was enough of carnage to prove that so gracious a commandment as this could not have risen spontaneously in the heart of early Judaism. Does it seem to be made more natural, by any proposed shifting of the date? The reason of the precept is beautifully human. It rests upon no abstract basis of common rights, nor prudential consideration of mutual advantage. In our time it is sometimes proposed to build all morality upon such foundations; and strange consequences have already been deduced in cases where the proposed sanction has not seemed to apply. But, in fact, no advance in virtue has ever been traced to self-interest, although, after the advance took place, self-interest has always found its account in it. A progressive community is made of good men, and the motive to which Moses appeals is compassion fed by memory: “For ye were strangers in the land of Egypt” (xxii. 21); “For ye know the heart of a stranger, seeing ye were strangers in the land of Egypt” (xxiii. 9). The point is not that they may again be carried into captivity: it is that they have felt its bitterness, and ought to recoil from inflicting what they writhed under. Now, this appeal is a master-stroke of wisdom. Much cruelty, and almost all the cruelty of the young, springs from ignorance, and that slowness of the imagination which cannot realise that the pains of others are like our own. Feeling them to be so, the charities of the poor toward one another frequently rise almost to sublimity. And thus, when suffering does not ulcerate the heart and make it savage, it is the most softening of all influences. In one of the most threadbare lines in the classics, the queen of Carthage boasts that “I, not ignorant of woe, To pity the distressful know.” And the boldest assertion in Scripture of the natural development of our Saviour’s human powers, is that which declares that “In that He Himself hath suffered, being tempted, He is able to succour them that are tempted” (Heb. ii. 18).