The verse Acts 15:21 in the King James Version (KJV) states, "For Moses of old time hath in every city them that preach him, being read in the synagogues every sabbath day." This verse comes from the New Testament book of Acts, which chronicles the activities of the early Christian church following the death and resurrection of Jesus Christ.

The context of Acts 15:21 is a significant meeting of the apostles and elders in Jerusalem to address the issue of whether Gentile converts to Christianity should be required to follow Jewish customs, such as circumcision and observing the Mosaic law. The apostle Peter, along with Paul and Barnabas, had testified to the Gentiles receiving the Holy Spirit without adherence to these customs, and the apostle James made the decision that Gentiles should not be burdened with these requirements. Instead, they were only to abstain from idolatry, sexual immorality, and consuming blood.

In Acts 15:21, James explains his decision by referring back to the teaching and practice of the Jewish law as preached by Moses. He asserts that the message of the Mosaic law is being proclaimed and upheld by Jewish teachers in every city, as evidenced by the fact that the law is publicly read in the synagogues every sabbath day. This suggests that the Gentile converts would have opportunities to hear and learn about the principles of the Mosaic law and the Jewish heritage, while not being required to adhere to the more burdensome aspects of the law.

The verse has several layers of meaning and significance. First, it speaks to the delicate balance the early church was trying to strike between the Jewish and Gentile components of the Christian community. There was a recognition of the Jewish heritage of Christianity, and the continuity of the teaching and values of the Mosaic law in the emerging Christian faith. At the same time, there was also a desire to incorporate and welcome Gentile converts into the Christian community without imposing unnecessary barriers.

The verse also highlights the ongoing relevance and authority of the Mosaic law in the early Christian context. Despite the debates and controversies surrounding the application of the law to the Gentile converts, the apostles and elders acknowledged the enduring significance of the law in shaping the ethical and moral framework of the Christian faith. Even as the Gentile believers were not required to observe the Jewish customs, they were expected to respect and uphold the moral principles of the law.

Moreover, Acts 15:21 offers insights into the early Christian practice of gathering and worshiping in the synagogues. The reference to the Mosaic law being read in the synagogues every sabbath day indicates the close relationship between the early Christian community and the Jewish traditions. It suggests that the early Christians were still participating in and engaging with the synagogue gatherings, and that the teaching of the Mosaic law continued to be a significant influence on the early Christian believers.

Symbolically, Acts 15:21 represents the harmonious integration of the Jewish and Gentile aspects of the early Christian community. The verse emphasizes the common foundation of the Mosaic law that shaped the ethical and moral values of the early Christians, even as they navigated the complexities of their diverse backgrounds and cultures. It also underscores the importance of dialogue, understanding, and inclusivity in building a unified and diverse Christian community.

In conclusion, Acts 15:21 in the KJV version encapsulates the dynamic and multi-faceted nature of the early Christian church, as it grappled with the intersection of Jewish and Gentile traditions. The verse highlights the ongoing significance of the Mosaic law in shaping the ethical and moral framework of the Christian faith, and it signifies the inclusive and integrative spirit of the early Christian community.