The answer is: Matthias

Acts 1:26 - casting lots to decide between Matthias and Barsabbas.

After Judas Iscariot's betrayal and subsequent death, the early disciples needed to fill his empty spot among the Twelve, a crucial symbolic group representing the tribes of Israel. The method they chose—casting lots—reflects how serious they were about letting fate, or divine will, guide their decision. It's kind of like a heavenly game of chance!

Matthias, one of the options, was well-regarded among the early church. Acts 1:21-22 indicates that he had been with Jesus from the start of his ministry, which gave him an edge in the eyes of the apostles. Interestingly, Barsabbas had also been a part of early Christian events, but it was Matthias who drew the short straw (or lucked out, depending on your viewpoint!).

In casting lots, they echoed practices of the Old Testament, where lots were often used to determine God's will, like during the allocation of land among the tribes of Israel in Joshua 18. This connection reinforces how the nascent Christian community saw themselves not just as followers of Jesus when he was alive, but as continuers of the rich tradition and covenant established with the Israelites.

In the grand narrative of Acts, Matthias doesn't get much spotlight post-election, but his appointment holds great significance. It represents how the early church sought to be rigorous about maintaining their structure and spiritual lineage, paving the way for the explosive growth of Christianity in the years to come. It reminds us that even when roles change, the mission moves forward!