Watch HDToday. John Newton was a troubled young man with a violent temper and a penchant for vulgarity that literally made his fellow sailors blush. Whipped for desertion and sold into slavery, it seemed his life would end early in a West African grave...until he was rescued by a ship captain sent by his father. Following a powerful conversion experience during a storm at sea, Newton would eventually become a pastor in the Church of England and the writer of several of the church's most beloved hymns, including "Amazing Grace".