Matthew 5:36

36 And do not take an oath by your head, for you cannot make one hair white or black.

Matthew 5:36 In-Context

34 But I say to you, Do not take an oath 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 take an oath 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.
38 "You have heard that it was said, 'An eye for an eye and a tooth for a tooth.'
The English Standard Version is published with the permission of Good News Publishers.