I Teach the Dark Lord to Kill Gods

I traveled into the Western fantasy world and became a saint of light. The system forced me to convert the world-destroying villain Samuel. If I failed, I would die. But who stipulates that "influence" should make him believe in God? During the day, I acted pious in the church, preaching and showing grace; At night, he was dragged into a secret room to start a class, teaching him how to expose the hypocrisy of gods and devour divine power. He handed over the empty "Blessing of Light" to imply that the Holy See was just a show-off. Breaking into the forbidden book area taught him to use "deception" to hide from the Holy Light. He even secretly changed the energy to help him disguise darkness in the "Blessing of Light" in front of everyone. From the underground altar revealing the truth about the plunder of faith, to tempering the blood of my saint to forge the God-killing blade, we have become accomplices in raising swords against God. When the God of Light issued divine punishment and the system started to erase, Samuel held my hand and roared: "No one can take you away without my permission!" It turns out that this life-focused teaching has long since tied us to death on the same path of killing gods.