Complex sentence: Sidon was the site of an ancient Christian community, dating back to the dawn of Christianity; the presence of a bishop is historically attested for the first time at the First Council of Nicaea of 325.
Split into simpler sentences: Sidon was the site of an ancient Christian community, dating back to the dawn of Christianity. However, the presence of a bishop is historically attested for the first time at the First Council of Nicaea of 325.