Matthew 5:33-37

³³Again, ye have heard that it was said to them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths: ³⁴but I say unto you, Swear not at all; neither by the heaven, for it is the throne of God; ³⁵nor by the earth, for it is the footstool of his feet; nor by Jerusalem, for it is the city of the great King. ³⁶Neither shalt thou swear by thy head, for thou canst not make one hair white or black. ³⁷But let your speech be, Yea, yea; Nay, nay: and whatsoever is more than these is of the evil one.