The answer is: 40

Acts 1:3 - there are no less than 13 different appearances of Jesus to his disciples during these 40 days.

After the resurrection, Jesus spent 40 days appearing to his disciples, leaving a lasting imprint on the early Christian faith. This post-resurrection period was crucial—it wasn't just about the how of the resurrection, but also the “what next.” Acts 1:3 highlights this by stressing that Jesus communicated key teachings and even offered evidence of his resurrection to solidify the faith of the believers. It weren't just casual hangouts; it was a vital time to reinforce their mission.

Isn’t it fascinating that there are up to 13 distinct appearances noted? It creates a vibrant tapestry of interactions; from encounters on the road to Emmaus to the shore where he grilled fish, each moment thick with meaning. One memorable occurrence involves "doubting" Thomas, whose skepticism ultimately became a profound testament to faith. Jesus’ repetitions in teaching also echo throughout scripture: remember that manna providing 40 years in the wilderness? It seems God's exact number gives time for transformation.

Moreover, numerology plays a delightful role here in biblical scripture. The number 40 appears often, symbolizing periods of trial and testing. Think about Moses on Mount Sinai or the Israelites roaming the desert. Contextually, these themes interweave a complete picture of redemption and preparation that transcends centuries—emphasizing that even after an event as monumental as the resurrection, continuous growth and learning are paramount. This allows believers afterward to emerge into a new chapter with renewed purpose and yon relatable uncertainty. Isn't it amazing how ancient occurrences still resonate today?