Complex sentence: Following his high school graduation, Flower wished to become a Protestant minister, like his father and an older brother before him, so he entered the Disciples of Christ's School of the Bible at Transylvania University in Lexington.
Split into simpler sentences: Following his high school graduation, Flower wished to become a Protestant minister, like his father and an older brother before him. He thus began studies at the Disciples of Christ's School of the Bible at Transylvania University in Lexington.