Satan the Devil is the ultimate source of falsely called knowledge and the perpetuator of anti-God philosophies throughout time. Gnosticism stands as one of the many heresies he employs to deceive the whole world. In his first message to mankind in the Garden of Eden, he introduces three core heresies that have persisted through history. The first heresy sows seeds of doubt about God's trustworthiness. With his initial words to Eve, questioning whether God indeed said certain things, he instills a sentiment that God's Word is suspect. This distrust is evident in Gnosticism, where knowledge is valued over Scripture, relying instead on personal experiences, teachings of elders, or insights from angels, astrology, or alchemy. This same skepticism undermines faith by casting doubt on the legitimacy of God's Word, making it subject to human whims and thus untrustworthy. The second heresy, declared by satan as "You shall not surely die," promotes the idea that humans are already immortal, negating the true consequence of death. This lie, reflected in Gnostic dualism of flesh and spirit, portrays the flesh as evil and the spirit as good, with death seen as liberation. Such a belief diminishes the urgency to live according to God's desires, as immortality is assumed, reducing the motivation to resist carnality or to grow spiritually. The third heresy suggests that by taking knowledge of good and evil, humans can be like God, determining right and wrong for themselves. Satan places emphasis on knowing over living eternally, contrasting with a life of submission to God's defined standards. Gnostics pursue mystical knowledge, believing it holds the key to eternal life through advancing into the spiritual realm. This rejection of God's standard fosters antinomianism among Gnostics, who resist laws or standards that conflict with their own, establishing personal codes of conduct over divine commandments. These three heresies, recycled since Creation, subtly undercut God's truth and plan for mankind, manifesting in Gnosticism and every anti-God system of belief. They continue the separation from God begun in the Garden, promoting self-centeredness over outgoing concern, and prioritizing knowledge over faith, hope, and love as defined by God's way.

Today, the largest body of the true church of God is rapidly being swept away by damnable heresies from the faith once delivered. False doctrines, though brought through men, have their real source in satan, who is the master of deceit. Evil spirits induce people to wander from the true path of God's Word, and heresy is not always easily detected because satan camouflages the lie with a large measure of truth. Because the world is so ignorant of God, satan can tell them virtually anything, and they will believe it, but with the church, he subtly twists the intent of scripture to bend it into a wrong application or understanding. Satan's plan of attack within the church is evident through a steady stream of small changes called adjustments, clarifications, or refinements to revealed and established doctrines. These may slip by unnoticed, but their overall effect is to cast doubt on what was previously believed, leading to a slackening of careful and disciplined submission to God as people become uncertain about what is right. Satan inspires his ministers to adjust fairly important doctrines to test the reaction of the membership, redirecting the church toward teachings essential to salvation but not the overall goal by altering the focus of the message of Jesus Christ and the apostles. Furthermore, satan moves to obscure the nature of God, casting members into deep confusion about how they are supposed to conduct their lives. If people still accept these heresies, satan begins teaching that some of God's laws no longer need to be kept, especially those that seem to give members more immediate control over their time, money, and destiny. Such teachings, announced under the right conditions, appeal to people's devotion to God and give the appearance of more freedom to make choices. Through his ministers' false teaching, satan makes every effort to deceive people to break God's laws, as he hates God's law, which is the way of righteousness.

The origin of all deception traces back to Helel, later called Satan, who allowed vanity over his own beauty, intelligence, and abilities to convince him that he was not receiving his due honor from God. This self-told lie festered until he told himself a second lie—that the solution was rebellion against God's throne—and he drew other angels into this insurrection, resulting in division and warfare in heaven. This pattern of vanity leading to self-satisfaction at the expense of submission to God became the essence of sin itself, and it remains Satan's primary tool for manipulating mankind. As "the prince of the power of the air" (Ephesians 2), he surcharges the atmosphere with his spirit, to which human nature is naturally attuned, making his influence difficult to detect except through the fruit it produces: confusion, division, and warfare. Satan's chief method is disinformation combined with the manipulation of attitudes, pushing human reasoning toward self-satisfaction rather than self-denial. This is illustrated in Ananias and Sapphira, who were led to lie about a donation after feeling they deserved to keep back part of what they had pledged. It is also seen dramatically in Peter's rebuke of Christ in Matthew 16, where Peter, having just confessed Jesus as Messiah, objected to the prophesied suffering of the Messiah. Though Peter meant well, his words reflected a common Jewish expectation of a conquering Messiah rather than God's revealed will in Isaiah 52-53, and Jesus identified the source of this disinformation as Satan himself, echoing the same offer of painless Messiahship Satan had made in the wilderness temptation. I Peter reveals Satan's opportunism toward those suffering prolonged, wearing trials—government pressure, harsh employers, difficult marriages—situations that tempt believers to feel mistreated and to let emotions override submission to God. Satan, the "roaring lion," preys especially on those who stray from the body through hurt feelings, always pushing toward retaliation rather than the pattern of Christ, who suffered unjustly without reviling in return, entrusting Himself to God's righteous judgment. Jude 6-8 identifies three marks of demonically influenced false teaching: indulging lust, rejecting the Lordship of Christ, and denigrating the reality of spirit beings—either by denying Satan's existence, as in much mainline theology, or by trivializing him, as in some evangelical showmanship. II Peter 2 warns that false teachers "smuggle in" destructive heresies disguised as harmless refinements of truth, motivated by covetousness and evil ambition, leading many into pernicious, deadly error while appearing innocent. In the Corinthian church, this same spirit produced confusion, cliques, and division, as members grew puffed up with knowledge and self-righteousness, attacking one another rather than God directly. Paul explicitly notes believers are "not ignorant of his devices," describing Satan as one who transforms himself into an angel of light through false ministers. The underlying lesson throughout is that Satan constantly moves human reasoning toward self-centeredness—the true opposite of love, of which hatred is merely one expression—drawing believers gradually away from fellowship and submission to God through wounded pride and self-justification.