Matthew 5:33-37

33 Again ye have heard, that it was said to old men, Thou shalt not forswear, but thou shalt yield thine oaths to the Lord. [Again ye have heard, that it was said to old men, Thou shalt not forswear, but to the Lord thou shalt yield thine oaths.]

34 But I say to you, that ye swear not for any thing [Forsooth I say to you, to not swear on all manner]; neither by heaven, for it is the throne of God;

35 neither by the earth, for it is the stool of his feet; neither by Jerusalem, for it is the city of a great king [for it is the city of the great king];

36 neither thou shalt swear by thine head, for thou mayest not make one hair white, or black;

37 but be your word, Yea, yea; Nay, nay [but your word be Yea, yea; Nay, nay]; and that that is more than these, is of evil.