Final answer:
Contrary to the claim, St. Paul's teachings and journeys are documented through the Pauline Epistles and the Acts of the Apostles in the New Testament, offering insights into his influence on early Christian doctrine and the spread of Christianity.
Step-by-step explanation:
The assertion that the Church has no written record of St. Paul's teachings and journeys in the early Christian Church is not entirely accurate. We have substantial textual evidence of St. Paul’s contribution to early Christianity, primarily through the Pauline Epistles in the New Testament. These letters, attributed to Paul, are some of the earliest written Christian documents we have, predating the Gospels, and they offer insight into his theology, missionary journeys, and the challenges of the early Church.
Furthermore, the Acts of the Apostles in the New Testament provides a narrative of Paul's extensive travels and his role in the spread of Christianity throughout the Roman Empire. This text includes accounts of his conversion, missionary work, and the various communities he established or visited. Combined with external historical evidence and archaeological finds, we can construct a detailed picture of Paul’s influence on Early Christianity.
It is also worthwhile to note that Paul's teachings, such as his views on the divine plan and the redemption of human sin through Jesus's death, became central to Christian doctrine as it developed over time. Despite differences and debates over interpretation, Paul’s epistles have been pivotal in shaping Christian theology and practice.