Career
When she was 15, she engaged in sexual activity with her boyfriend. In 1996, she founded Pure Freedom, an organization that teaches young girls about chastity. She also leads an organization that provides abstinence-only sex education in Zambia.
She wrote the book And the Bride Wore White: Seven Secrets to Sexual Purity, which was published in 1999.
She cowrote the book Lies Young Women Believe: And the Truth that Sets Them Free with Nancy Leigh DeMoss. Gresh has also written about how to parent teenagers.