Complex sentence: His brother, George, had found employment in New South Wales and Lang decided to join him, arriving in Sydney Cove on 23 May 1823 he became the first Presbyterian minister in the colony of New South Wales.
Split into simpler sentences: His brother, George, had found employment in New South Wales and Lang decided to join him. Arriving in Sydney Cove on 23 May 1823 he became the first Presbyterian minister in the colony of New South Wales.