That fact underscores the true reason for every denial of truth: “Men loved darkness rather than light, because their deeds were evil” (John 3:19). Here the Lord Jesus says people reject truth (light) for reasons that are fundamentally moral, not intellectual. Truth is clear—too clear. It reveals and condemns sin. Therefore, “everyone practicing evil hates the light and does not come to the light, lest his deeds should be exposed” (v. 20). Sinners love their sin, so they flee from the light, denying that it even exists