Okla. Stat. tit. 21, § 51.1a
Any person convicted of rape in the first degree, forcible sodomy, lewd molestation or sexual abuse of a child after having been convicted of either rape in the first degree, forcible sodomy, lewd molestation or sexual abuse of a child shall be sentenced to life without parole
Laws 2002, SB 1425, c. 455, § 3, emerg. eff. June 5, 2002.