Every officer of the city shall, before entering upon the duties of his office, take and subscribe to the following oath or affirmation:
“I, __________, do solemnly swear (or affirm), that I will faithfully execute the duties of the office of __________, of the City of Dumas, State of Texas, and will to the best of my ability preserve, protect, and defend the construction [constitution] and laws of the United States and of this state and the charter and ordinances of this city; and I furthermore solemnly swear (or affirm), that I have not directly nor indirectly paid, offered, or promised to pay, contributed nor promised to contribute any money, or valuable thing, or promised any public office or employment, as a reward for the giving or withholding a vote at the election at which I was elected, or if the office is one of appointment, to secure by employment. So help me, God.”