Matthew 5:34-37

Revised Standard Version Catholic Edition

³⁴ But I say to you, Do not swear at all, either by heaven, for it is the throne of God, ³⁵ or by the earth, for it is his footstool, or by Jerusalem, for it is the city of the great King. ³⁶ And do not swear by your head, for you cannot make one hair white or black. ³⁷ Let what you say be simply ‘Yes’ or ‘No’; anything more than this comes from evil.^[a]