Until people have experienced God’s work and gained the truth, it is Satan’s nature that takes charge and dominates them from within. What, specifically, does that nature entail? For example, why are you selfish? Why do you protect your own position? Why do you have such strong emotions? Why do you enjoy those unrighteous things? Why do you like those evils? What is the basis for your fondness for such things? Where do these things come from? Why are you so happy to accept them? By now, you have all come to understand that the main reason behind all these things is that Satan’s poison is within you. As for what Satan’s poison is, it can be fully expressed with words. For example, if you ask, “How should people live? What should people live for?” people will answer, “Every man for himself and the devil take the hindmost.” This single phrase expresses the very root of the problem. Satan’s logic has become people’s lives. No matter what, people are just in it for themselves. They therefore only live for themselves. “Every man for himself and the devil take the hindmost”—this is the life and the philosophy of man, and it also represents human nature. These words of Satan are precisely the poison of Satan, and when people internalize it, it becomes their nature. Satan’s nature is exposed through these words; they represent it completely. This poison becomes people’s lives as well as the foundation of their existence, and corrupted humanity has been consistently dominated by this poison for thousands of years. Everything Satan does is for itself. It wishes to surpass God, break free of Him, and wield power itself, and to possess all of God’s creations. Therefore, man’s nature is Satan’s nature. In fact, a lot of people’s mottos can represent and reflect their nature. No matter how people try to disguise themselves, in everything they do and in everything they say, they cannot hide who they are. There are some who never speak the truth and are good at pretending, but once others have interacted with them for a while, their deceitful nature and complete dishonesty are found out. In the end, others draw the following conclusion: That person never speaks a word of truth, and is deceitful. This statement represents such a person’s nature; it is the best illustration and proof of their nature and essence. Their philosophy of life is to not tell anyone the truth, as well as to not trust anyone. Man’s satanic nature contains a great deal of this philosophy. Sometimes you yourself are not even aware of that, and do not understand it; nevertheless, every moment of your life is based on it. Moreover, you think that this philosophy is quite correct and reasonable, and not at all mistaken. This suffices to show that Satan’s philosophy has become people’s nature, and that they are living in complete accordance with it, without rebelling against it in the slightest. Therefore, they are constantly revealing their satanic nature, and in all aspects, they continue to live by Satan’s philosophy. Satan’s nature is humanity’s life, and it is humanity’s nature.

—The Word, Vol. 3. The Discourses of Christ of the Last Days. How to Walk the Path of Peter