While the Bible doesn’t directly mention pornography, it is very clear about how God views actions that promote sex outside of marriage and distorted views on sex. The Bible points out that when a married man “keeps on looking at a woman” to whom he is not married, nurturing a desire to have sex with her, it can lead to adultery. This applies to anyone, married or single who “keeps on looking” at pornographic images with the desire to engage in sexual immorality.
Sexual immorality is denounced in about 25 passages in the New Testament. Jesus said, “It is what comes out of a person that defiles. For it is from within, from the human heart, that evil intentions come, fornication, theft, murder, adultery, avarice, wickedness, deceit, licentiousness, envy, slander, pride, folly. All these evil things come from within, and they defile a person” (Mark 7:20-23). The apostle Paul also said to flee from sexual immorality. All other sins people commit are outside their bodies but those who sin sexually sin against their own bodies.