5 ³³ 'Again, you have learned that they were told, "Do not break your oath", and, "Oaths sworn to the Lord must be kept." 5 ^{34 [ Is.66.1. ]} But what I tell you is this: You are not to swear at all - not by heaven, for it is God's throne, 5 ³⁵ nor by earth, for it is his footstool, nor by Jerusalem, for it is the city of the great King, 5 ³⁶ nor by your own head, because you cannot turn one hair of it white or black. 5 ³⁷ Plain "Yes" or "No" is all you need to say; anything beyond that comes from the devil.