The issue of doctrinal problems is central to the spiritual challenges facing believers today. There is a growing belief among some that the true Church of God cannot be identified by organizational structure or doctrine, asserting that no single doctrinal package represents absolute truth. This perspective suggests that every group holds a mix of true and false doctrines, and individuals are led by the Holy Spirit to varying degrees, each with their own blind spots and flaws. Consequently, some former members of the churches of God are now fellowshipping in mainstream Sunday-keeping churches, believing there is no harm in meeting on Sunday to learn God's word or to fellowship, claiming that the spirit of God works in those churches as well. However, this stance is deeply flawed when compared to biblical commands. The Bible clearly identifies a distinct organization as the Church of God, not as Methodist, Presbyterian, or any other denomination. The New Testament epistles were written to address issues within Church of God congregations, not to suggest fellowshipping with other groups as a solution. There is no scriptural indication that Christians were expected to be part of other corporate bodies outside the Church of God. The General Epistles of James, Peter, John, and Jude address divisions caused by false ministers within the Church of God, yet none suggest joining competing spiritual groups, where false doctrines that scatter the church are prevalent. Fellowshipping with groups that defy the Fourth Commandment by keeping Sunday instead of the Sabbath results in being taught doctrines the Lord has not commanded. God warns against following other gods or teachings, as seen in Deuteronomy 13:1-5, testing our faithfulness to Him. Those who turn to other groups during this scattering are failing this test, showing they cannot remain faithful to Jesus Christ, seeking spiritual needs apart from Him. The Sabbath is a perpetual sign between God and His people, as established in Exodus 31:13-17, distinguishing the true Church from others who reject this covenant. Scripture consistently urges separation from false teachings and churches, as in II Corinthians 6:14-18, emphasizing that there is no fellowship between righteousness and unrighteousness. The Church of God is the pillar and ground of the truth, containing the doctrines necessary for salvation. Poor performance within the Church is not due to wrong doctrines but to a lack of faith and understanding of God's way. Joining with the enemy's camp by fellowshipping with false churches is not the way to correct doctrine or prepare for good works. False doctrines deceive and destroy godly maturity and unity, as warned in Ephesians 4:14. The unity of the Church of God is essential, built on God's purpose and calling, uniting believers in one body under Christ. Those who fellowship with other groups risk becoming absorbed, losing their distinctive identity as part of the Israel of God. The fruit of these competing organizations often reflects worldly values rather than God's promises, further evidencing their divergence from the truth. Ultimately, doctrine does make a difference. Belief shapes conduct, and following false doctrines by deliberately fellowshipping with false churches leads to a path away from being part of the first fruits. The true doctrines, given as a specific package within the Church of God, are essential for preparation and obedience to God's plan, ensuring believers are not deceived by appearances or lured by the enemy's teachings.

In the ongoing discussion of the importance of doctrine, it becomes evident that doctrinal problems have persistently challenged the church, from the first century to the present day. These issues often stem from the influence of surrounding cultures, bringing conflicting cosmologies into the congregation. In the first century, the Hellenistic world, steeped in Greek philosophical and religious thought, significantly impacted the early church. Many early converts, including Jews, were influenced by Greek ideas, introducing doctrines such as the immortality of the soul, reincarnation, evolution, eternal security, antinomianism, purgatory, and continual personal revelation. These teachings, rooted in human wisdom and scientific observations rather than divine revelation, were systematized by philosophers like Pythagoras, Socrates, and Plato over centuries, forming a competing cosmology that clashed with biblical truth. The danger of adopting even a single false doctrine is profound, as it can lead to a cascade of further deviations, much like a row of dominoes falling. A single alteration in belief can misalign an entire doctrinal framework, potentially derailing one's path to the Kingdom of God. The apostles, including Paul, repeatedly addressed these congregational disturbances, urging the safeguarding of sound doctrine against profane and vain babblings and the oppositions of falsely called science. Paul's counsel to Timothy emphasizes the need to guard the teachings entrusted to him, highlighting the ongoing battle against deceptive doctrines that appeal to carnal nature. These doctrinal challenges are not merely historical; they persist in modern Christianity, where beliefs such as the immortality of the soul remain prevalent. This dualistic view, which deems matter as evil and spirit as good, contradicts the biblical assertion that God declared His material creation very good. Such foundational lies in pagan thought produce a fruit of further false doctrines, posing a critical choice for believers today. The responsibility lies with each individual to test and prove the doctrines they receive, ensuring they align with the truth of God's Word, as the adoption of erroneous beliefs can jeopardize salvation.

The importance of truth in religious doctrine is a weighty matter, as it is easy to fall into tragic flaws by accepting erroneous beliefs, thinking they are acceptable to Christ. A significant doctrinal problem arises from the assertion that the Christian God and the Islamic god are the same, a statement that contradicts the fundamental differences in their major doctrines, except for the shared belief in a Creator. This claim, as evidenced by public statements, is theologically incorrect, presenting a god involved in hypocrisy and confusion, which the God of the Bible is not. The Bible clearly states in Hebrews 6:18 and Numbers 23:19 that it is impossible for God to lie, and in I Corinthians 14:33, that God is not the author of confusion but of peace. Furthermore, Matthew 12:25-26 illustrates that a kingdom divided against itself cannot stand, and since Islam and Christianity have been in conflict for over a thousand years, they cannot be guided by the same God of the Bible, who does not make war against Himself. This doctrinal discrepancy has serious spiritual ramifications within the church, as seen in James 4:1-4, where wars and fightings among members are evidence of a broken relationship with God, flowing from attitudes and conduct influenced by the ruler of this world. Similarly, I John 4:19-21 emphasizes that hatred among brethren indicates a lack of love for God, underscoring that the love of God, shed abroad in our hearts, is essential for true peace and fellowship. If Christianity and Islam were drawing from the same Spirit of God, they would exhibit unity of mind and teaching, not the antagonism and unstable warfare that currently exists. Further compounding the issue, many in Western nations calling themselves Christian are impacted by satanic deceptions regarding God, leading to widespread division and confusion in belief. Jesus warned against false teaching as the foremost danger in the end times, as noted in Matthew 24:4-5, highlighting that false teachers claiming to represent Him lead people astray with incorrect doctrines about His way. Modern Christianity often diverges from biblical teachings, as seen in Matthew 5:17-19, where Jesus affirms the enduring nature of the law, yet many feel free to declare it obsolete. In Matthew 6:24, Jesus states that no one can serve two masters, yet many claim their religion is a private matter, free to believe as they wish, ignoring the loyalty and trust required in God's way. Additionally, Matthew 7:13-14 describes the narrow and difficult path of His way, contrasting with the broader, less restrictive paths many choose. The distinctiveness of Christianity as a way of life, set apart by unique beliefs and practices, is reiterated nine times in the Book of Acts, yet this is undermined by claims that equate the God of Christianity with that of Islam, effectively denying the exclusivity of Jesus as Savior, as stated in Acts 4:11-12. Recent polls among born-again Christians reveal a shocking departure from biblical doctrine, with 26% believing all religions are essentially the same, 50% thinking good works alone can lead to heaven, and 35% denying the resurrection of Jesus, despite Romans 10:6-9 asserting that belief in His resurrection is essential for salvation. These beliefs indicate a dangerous trend of creating personal religions, mirroring the initial deception of Adam and Eve, where choosing to believe false teachings led to actions contrary to God's path, ultimately affecting salvation.