Complex sentence: He was ordained in the Society of Jesus and, at the age of 34, he was appointed Visitor of Missions in the Indies and had made his profession of the fourth vow after only seven years in the Society.
Split into simpler sentences: He was ordained in the Society of Jesus and, at the age of 34, he was appointed Visitor of Missions in the Indies. He made his profession of the fourth vow after only seven years in the Society.