Final answer:
The apostle Paul referred to himself as 'one born out of due time,' metaphorically expressing his late conversion and unique role in the spread of Christianity.
Step-by-step explanation:
The individual who considered himself to be 'one born out of due time' is the apostle Paul, specifically referred to in the Christian New Testament scriptures. This metaphorical phrase indicates that Paul felt his conversion to Christianity and his apostleship came later than the other apostles, akin to a premature birth in nature. Paul is a historical figure whose influence on Christianity is profound, authoring several books of the New Testament and spreading the Christian faith across the Roman Empire.