Oaths: The Jews: Forbidden to Take in the Name of Any Created Thing
Source: TTT
Matthew 5:34–36
But I tell you not to swear at all: either by heaven, for it is God’s throne; / or by the earth, for it is His footstool; or by Jerusalem, for it is the city of the great King. / Nor should you swear by your head, for you cannot make a single hair white or black.
James 5:12
Above all, my brothers, do not swear, not by heaven or earth or by any other oath. Simply let your “Yes” be yes, and your “No,” no, so that you will not fall under judgment.