Matthew 5:33-37

33“Again, you have heard that it was said to those of old, ‘You shall not swear falsely, but shall carry out your oaths to Adonai.’

34But I tell you, do not swear at all—not by heaven, for it is the throne of God;

35or by the earth, for it is the footstool of His feet; or by Jerusalem, for it is the city of the Great King.

36And do not swear by your head, for you cannot make a single hair white or black.

37But let your word ‘Yes’ be ‘Yes’ and your ‘No,’ ‘No’—anything more than this is from the evil one.”