The answer is: Greek

Acts 16:1,3 - so Paul circumcised Timothy so the Jews would accept what he had to preach.

Timothy is a fascinating figure in the early Christian church, and his mixed heritage sheds light on the diverse backgrounds that shaped the spread of Christianity. His father was Greek, which highlights how early Christian communities were often multicultural. This resonates with the later message of inclusivity found within early Christianity, a movement that aimed to transcend cultural divisions.

When Paul chose to circumcise Timothy, it was pragmatic, given Timothy's largely Jewish audience. Paul was carefully balancing the expectations of Jewish customs with the need for the church to embrace Gentile members—an internal tension that could make for rocky congregations. This kind of strategic mission to adapt demonstrates the role of cultural sensitivity in the spread of ideas.

Interestingly, Timothy's mixed background can be seen as a microcosm of the emerging Christian identity, one that increasingly drew from various traditions rather than being constrained solely within Jewish law. This transitions happily into the broader narrative that ignited a dialogue on grace versus the requirements of law.

In addition, it’s worth noting how Timothy seems to have a calm, trustworthy core amid the exciting and often chaotic journeys with Paul—leadership brewed from both family upbringing and exposure to different cultures. As we look at Timothy, we can't help but wonder how many “Timothys” exist today, straddling cultures and enriching conversations both in religious and secular contexts.