Tennessee Code Title 67. Taxes and Licenses § 67-5-1901

(a) The trustee shall, before the county clerk or county mayor, at the time of executing bonds, take and subscribe the following oath, in addition to the oath now prescribed by law, viz.:

I do solemnly swear that I will faithfully collect and account for all taxes for my county, or cause the same to be done, according to law, and that I will use all lawful means in my power to find out and assess such property as may not have been assessed for taxation in my county, and return a list of the same on settlement.

(b) The trustee shall be bonded in accordance with § 8-11-103.