Tex. Loc. Gov't Code § 84.007
(a) Before taking office and within 20 days after the date of a county auditor's appointment, the county auditor must execute a bond. The bond must be:
(b) The county auditor must take the official oath and a written oath that lists the positions of public or private trust previously held and the length of service in each of those positions and that states:
Acts 1987, 70th Leg., ch. 149, Sec. 1, eff. Sept. 1, 1987.