In the book of Acts, there was a conflict between the Sadducees and the apostles. This conflict was repeated throughout the book of Acts, and they were ultimately unable to reconcile their rival opinions. Why?
The Sadducees practiced and taught the Mosaic law, while the apostles were preaching the new ways of Christianity. The apostles were introducing new ways, and reforming old Mosaic law, and this was a threat to the teachings of the Sadducees and priests.
The Sadducees, and other religious officials, were doing everything in their power to prevent the message of Christianity from being spread. They attempted to arrest and threaten the apostles, so that they could quiet the bearers of the message. This included the Martyrdom of St. Stephen, and the imprisonment of the disciples; this was a threat to the apostles.
The Sadducees were the group of Jews in charge of maintaining the temple. The Sadducees appointed new priests, and managed multiple political and religious affairs. However, as stated in the previous paragraph, they expressed major opposition toward the message spread by the apostles. They opposed the shift of attention that was happening, from Mosaic law, toward the teachings of Christ spread by apostles.
This issue was not something that could just be taken in council and reconciled, because of the nature of the apostles’ message. The Sadducees and priests believed in ancient Mosaic law, and they were not open to any kind of change or reform. The apostles, on the other hand, preached in the name of Jesus, who the religious officials had crucified. It was the religious officials who had persecuted Christ, and prophets before his time. St. Stephen challenged them with this before they stoned him to death.
The Sadducees had arrested the apostles, twice, and both times, they warned them to stop preaching in the name of Christ. They continued to preach in the name of Christ, and continued to heal and perform miracles. The apostles were engaging in a transition away from Mosaic law, and religious officials could not come to accept this.
Ultimately, Christian leaders pursued in preaching the message, and Christianity survived this conflict. However, the religious leaders, primarily the Sadducees, and the apostles were unable to reconcile this conflict. The Christian leaders, in my opinion, had valid reason to avoid the Sadducees and other religious leaders at all costs.
The religious leaders were the ones persecuting the Christians. It wasn’t that these people weren’t allowed to join Christianity, Saul, who was a persecutor of Christians was converted and became a very influential Christian leader. The Sadducees, opposed the teaching and forbade it in the region. The apostles would not conform to this restriction given to them by the Sadducees.
From the point of view of the Sadducees, they believed in the teachings of the Mosaic laws, and they were not open to the new messages that contradicted, or “updated” their life-long beliefs. They would not reconcile with the people who spread the message that they believed, was in a sense, contradicting their ancient tradition.