Section XV-1: Officers required to take oath or affirmation - Form.

  All public officers, before entering upon the duties of their
offices, shall take and subscribe to the following oath or
affirmation:
  "I, ........., do solemnly swear (or affirm) that I will
support, obey, and defend the Constitution of the United States,
and the Constitution of the State of Oklahoma, and that I will
not, knowingly, receive, directly or indirectly, any money or
other valuable thing, for the performance or nonperformance of
any act or duty pertaining to my office, other than the
compensation allowed by law; I further swear (or affirm) that I
will faithfully discharge my duties as ......... to the best of
my ability."
  The Legislature may prescribe further oaths or affirmations.