Tex. Penal Code § 37.02: PERJURY.

(a) A person commits an offense if, with intent to deceive and with knowledge of the statement's meaning:

(1) he makes a false statement under oath or swears to the truth of a false statement previously made and the statement is required or authorized by law to be made under oath; or

(2) he makes a false unsworn declaration under Chapter 132, Civil Practice and Remedies Code.

(b) An offense under this section is a Class A misdemeanor.

Acts 1973, 63rd Leg., p. 883, ch. 399, Sec. 1, eff. Jan. 1, 1974. Amended by Acts 1993, 73rd Leg., ch. 900, Sec. 1.01, eff. Sept. 1, 1994.