"_Again, ye have heard that it hath been said[6] by them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths: But I say unto you, Swear not at all; neither by heaven; for it is God's throne: Nor by the earth; for it is his footstool: neither by Jerusalem; for it is the city of the great king. Neither shalt thou swear by thy head, because thou canst not make one hair white or black. But let your communications be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil._" (Matt. v. 33-37.) [6] Levit. xix. 12; Deut. xxiii. 21, 34. This passage always troubled me when I read it. It did not trouble me by its obscurity, like the passage about divorce; or by conflicting with other passages, like the authorization of anger for cause; or by the difficulty in the way of obedience, as in the case of the command to turn the other cheek;--it troubled me rather by its very clearness, simplicity, and practicality. Side by side with rules whose magnitude and importance I felt profoundly, was this saying, which seemed to me superfluous, frivolous, weak, and without consequence to me or to others. I naturally did not swear, either by Jerusalem, or by heaven, or by anything else, and it cost me not the least effort to refrain from doing so; on the other hand, it seemed to me that whether I swore or did not swear could not be of the slightest importance to any one. And desiring to find an explanation of this rule, which troubled me through its very simplicity, I consulted the commentators. They were in this case of great assistance to me. The commentators all found in these words a confirmation of the third commandment of Moses,--not to swear by the name of the Lord; but, in addition to this, they explained that this commandment of Jesus against an oath was not always obligatory, and had no reference whatever to the oath which citizens are obliged to take before the authorities. And they brought together Scripture citations, not to support the direct meaning of Jesus' commandment, but to prove when it ought and ought not to be obeyed. They claimed that Jesus had himself sanctioned the oath in courts of justice by his reply, "_Thou hast said_," to the words of the High Priest, "_I adjure thee by the living God_;" that the apostle Paul invoked God to witness the truth of his words, which invocation was evidently equivalent to an oath; that the law of Moses proscribing the oath was not abrogated by Jesus; and that Jesus forbade only false oaths, the oaths of Pharisees and hypocrites. When I had read these comments, I understood that unless I excepted from the oaths forbidden by Jesus the oath of fidelity to the State, the commandment was as insignificant as superficial, and as easy to practise as I had supposed.