I'm progressing through Gene Edwards' First-Century Diaries series, and just finished "The Timothy Diary" which looks at Paul's third missionary journey to Ephesus. I really enjoyed this, because it made me see how he used this time in his life, as he was getting older, to purposefully pour into the lives of several young men, that they would be able to continue the work of spreading the gospel of Christ after his own departure.
Along with other great historical insights Edwards' gives to the Scriptural narrative, this "diary" in particular was a good reminder of the struggles Paul faced in seeing churches birthed, grow and mature, even as he moved on to new areas. It was not always a pretty picture, and it's helpful to remind us that church life can be messy at times.
An enjoyable read.