Sexual purity; is there such a thing? Can anyone be sexually pure? Many books have been written about sexual purity within and without the confines of marriage. Sexual purity as taught in God's Word, the Holy Bible, is the only source of truth regarding sexuality. The Creator knows how His creation functions. He is the one who gave us the gift of sexual purity and He has given us His instructions on how to use that gift. Purity means one who is clean physically, morally and ethically. The Hebrew root word is t.hr' meaning to pronounce clean or to perform the ceremony of cleansing.