The church of God, once seemingly unified in a single corporate body like the Worldwide Church of God, now finds itself widely scattered following that body's collapse. This scattering raises questions about the existence of a single, corporate true church of God, as those who left have joined different organizations with similar doctrines but varied focuses and corporate identities. Some groups even display a standoffish attitude toward other churches of God, leading to a significant loss of unity, purpose, and solidarity. Despite the vast number of people worldwide calling themselves Christian, the true church remains minuscule and virtually invisible by biblical standards. Jesus promises in Matthew 16:18 that He will build His church, and the gates of Hades shall not prevail against it, ensuring it will never die out due to the eternal life within it and the protection of the most powerful army in creation. The size or visibility of the church does not negate its existence, nor does the presence of a mixture of wheat and tares among its visible membership diminish its true nature. Historically, the church was briefly unified as a single corporate group during the period covered by Acts 1-12. However, as the apostles scattered to preach the gospel, congregations formed beyond Jerusalem and Antioch, leading to a gradual dissolving of that unique unity. Over time, divisions increased, particularly as the gospel reached Gentile populations with little background in Israel's relationship with God, making the concept of a single true church or assembly vague and often disregarded. Even by the end of the first century, as seen in Revelation 2 and 3, congregations in Gentile cities like Ephesus, Smyrna, Pergamos, Thyatira, Sardis, Philadelphia, and Laodicea showed a range of spiritual conditions, yet they remained part of the true church despite their flaws and imperfections.

The church that Jesus Christ builds is described as a little flock that remains small and relatively insignificant by worldly standards. It never grows to the scale of large religious organizations such as the Catholic Church, major Protestant groups, or other world religions. This limited size is presented as the normal and intended condition throughout history rather than an abnormality. Earlier periods when the church appeared larger resulted from specific methods of preaching that required substantial resources and personnel, yet such growth did not reflect the pattern established by the Builder. Following the scattering of the former large organization, the resulting smaller fellowship groups operate with far less expense while reaching a wider international audience through modern communication tools. This configuration allows the church to fulfill its purpose more effectively than before without reliance on extensive institutional structures. The small size can create an appearance of weakness that tempts fear, yet the Builder explicitly instructs the members not to fear. The church continues under divine authority and functions according to the precise design required for the present time, remaining unified in purpose even while dispersed into multiple groups.

The size of God's church emerges as a central mystery tied to His overall plan of salvation. Rather than being the vehicle for worldwide salvation now, as most who call themselves Christian assume, the church is described as a "pilot group," a small, specifically selected body of firstfruits called out ahead of a much larger future harvest. Pentecost, occurring in the smaller spring harvest season, symbolizes this limited first calling, while the larger fall harvest represents the greater ingathering of humanity still to come. This means the church's smallness is not incidental but purposeful, reflecting God's patient, step-by-step unfolding of His master plan rather than a failure to reach the whole world. This smallness is illustrated through the analogy of the post-World War II Japanese military, which, restricted to a small self-defense force, trained every member from top to bottom as though each were an officer. This allowed them to expand rapidly and effectively whenever the need arose, since the entire small force had been trained to lead. Similarly, God has taken a small, select group—the church—and trained them not merely to be saved, but to lead under Christ when He returns. The church functions, as Herbert Armstrong described it, as a "teacher's college," where those called are being prepared for future positions of leadership in the World Tomorrow, teaching and training others. This explains why members of the church are referred to as "called," "chosen," and "predestinated"—they are draftees, not volunteers, a reality that runs contrary to carnal human thinking and is itself one of the church's mysteries. The smallness of the true body of believers is also connected to its historical invisibility within the larger religious world. Since the first century, the steadfast unity and gladness with which the earliest believers received the truth gave way to widespread mocking and dilution of that truth. Over time, the true body of believers became so small that it has remained hidden among the larger, more numerous "reasoned religions" of the world, including modern movements described as having a "show of wisdom" but lacking true connection to Christ as the Head. These groups, though vastly larger in size, are spiritually ineffective because they replace God's standards with humanly designed appeals to emotion and philosophy rather than genuine relationship with Christ. This theme of limited size ties directly into the broader message of divine mystery and patient stewardship. Just as Israel in the wilderness was not replaced but reserved for future restoration, the church today is not the final or total instrument of salvation but a present, smaller phase within a much larger unfolding purpose. The mystery of the church's size—its selectivity, its hiddenness, and its function as a trained leadership core—reflects God's sovereign timing and order. Believers are called to recognize that their smallness is not a mark of failure but a deliberate stage in a much larger plan, requiring patience, unity, and faithful stewardship as they wait, like a small trained force, to be expanded and revealed in full at Christ's return.