How did john newton feel about slavery?

John Newton, a former slave ship captain who later became a prominent abolitionist, experienced a profound transformation regarding slavery. Initially, he participated in the slave trade but eventually rejected it after converting to Christianity. Newton came to see slavery as morally wrong and spent much of his later life advocating against the practice, famously penning the hymn "Amazing Grace," which reflects his repentance and the belief in redemption. His experiences and change of heart contributed significantly to the abolitionist movement in England.