Final answer:
Paul showed the Corinthians the mystery of God's plan for salvation through Jesus Christ, using the term 'mysterion' as it was revealed to the apostles to communicate and spread. His use of the term resonated with similar language in Hellenistic religious traditions, despite the distinct Christian message being conveyed.
Step-by-step explanation:
The mystery that Paul showed the Corinthians refers to the divine secrets within God's plan, which Paul as an apostle was entrusted to reveal. By using the term mysterion in his First Letter to the Corinthians (2.1), Paul compares the role of the apostles to stewards of these divine secrets. These mysteries are particularly associated with the message of salvation through Jesus Christ, a message Paul conveyed as key to understanding God's plan (Romans 11.25). His use of mystery terminology captures the essence of Christian revelation that was once hidden but now disclosed through the gospel.
Furthermore, Paul's preaching in this context often included ethical teachings, such as the call to and holiness, challenging cultural norms and attracting individuals like Thecla, who sought a deeper understanding and spiritual way of life. His influence was widespread, reaching major cities across the Greco-Roman world, contributing significantly to the spread of Christianity. The mystery terminology used by Paul also resonated with the religious language of the time, as both pagans and Jews were familiar with ‘mystery’ in the context of religious rites and sacred knowledge. Nevertheless, Paul adapted the concept to fit the new Christian doctrine, distinguishing it from the pagan practices of the time.
While there is no indication of direct influence from pagan 'mysteries' on Paul’s teachings, the early Christian use of the term does share some vocabulary and metaphoric language common in the Hellenistic world. This layer of meaning provided an entry point for discussions about the nature of God's revelation in Christ, which was central to Paul's mission. His approach provided a framework for understanding Christianity against the backdrop of the religious and philosophical traditions of his era.