Complex sentence: Differing religious opinions within the colony eventually became public debates and erupted into what has traditionally been called the Antinomian Controversy, but has more recently been labelled the Free Grace Controversy.
Split into simpler sentences: Differing religious opinions within the colony eventually became public debates. The resulting religious tension erupted into what has traditionally been called the Antinomian Controversy, but has more recently been labelled the Free Grace Controversy.