But here it will be found how hard it is to do good works according to God's Commandment, how nature squirms, twists and writhes in its exposition to it, although it does the good works of its own choice easily and gladly. Therefore take your enemies, the ungrateful, and do good to them; then you will find how near you are to this Commandment or how far from it, and how all your life you will always have to do with the practice of this work. For if your enemy needs you and you do not help him when you can, it is just the same as if you had stolen what belonged to him, for you owed it to him to help him. So says St. Ambrose, "Feed the hungry; if you do not feed him, you have, as far as you are concerned, slain him." And in this Commandment are included the works of mercy, which Christ will require at men's hands at the last day. [Matt. 25:35 f.] But the magistrates and cities ought to see to it that the vagabonds, pilgrims and mendicants from foreign lands be debarred, or at least allowed only under restrictions and rules, so that knaves be not permitted to run at large under the guise of mendicants, and their knavery, of which there now is much, be prohibited; I have spoken at greater length of this Commandment in the Treatise on Usury.[53] Thou shall not bear false witness against thy neighbor. [Sidenote: The Eight Commandment: The Duty of Truthfulness] [Sidenote: In Worldly Matters] This Commandment seems small, and yet is so great, that he who would rightly keep it must risk and imperil life and limb, goods and honor, friends and all that he has; and yet it includes no more than the work of that small member, the tongue, and is called in German Wahrheit sagen, "telling the truth" and, where there is need, gainsaying lies; so that it forbids many evil works of the tongue. First: those which are committed by speaking, and those which are committed by keeping silent. By speaking, when a man has an unjust law-suit, and wants to prove and maintain his case by a false argument, catch his neighbor with subtilty, produce everything that strengthens and furthers his own cause, and withhold and discount everything that further his neighbor's good cause; in doing which he does not do to his neighbor as he would have his neighbor do to him. [Matt. 7:12] This some men do for the sake of gain, some to avoid loss or shame, thereby seeking their own advantage more than God's Commandment, and excuse themselves by saying: Vigilanti jura subveniunt, "the law helps him who watches"; just as if it were not as much their duty to watch for their neighbor's cause as for their own. Thus they intentionally allow their neighbor's cause to be lost, although they know that it is just. This evil is at present so common that I fear no court is held and no suit tried but that one side sins against this Commandment. And even when they cannot accomplish it, they yet have the unrighteous spirit and will, so that they would wish the neighbor's just cause to be