Matthew 5:33-37 - The Sermon On The Mount: Taking Oaths

³³ "Again you have heard that it was said to the men of old, "You must not forswear yourselves, but must perform your vows to the Lord. ³⁴ "But I say to you, swear not at all; neither by the sky, for it is God's throne; ³⁵ "nor by the earth, for it is the footstool of his feet; nor by Jerusalem, for it is the city of the Great King. ³⁶ "Nor must you swear by your head, since you cannot make one hair white or black. ³⁷ "But let your word be simply 'Yes' or 'No'; anything beyond this comes from the Evil One.