During his second missionary journey, Paul made his way to Jerusalem to help give relief with a famine that had occurred. He did this to establish unity amidst chaos and ended up spending two years in prison. Despite these circumstances, Paul learns more about God's sovereignty and how that was fully realized in the cross. A primary lesson Paul learned during his time in prison was considering the God he was following and how He would be glorified through this situation, not lamenting on why these circumstances happened to him. The questions of "who" and "how" are important for Christians to consider when encountering suffering, not to lament and become bitter and angry about "why" God would allow such things to happen.