After taking orders he was presented by the king in 1760 to the vicarage of Barwick Parva, Norfolk; and subsequently was appointed chaplain to the English factory at St Petersburg.
During his residence in Russia he was appointed medallist to Catherine the Great; and studied the history and liturgical rites of Orthodox church.
He was presented to the rectory of Wormley, Hertfordshire, by Sir Abraham Hume, 2nd Baronet, in July 1783.
[1][2][3] King died at his house in Edward Street, London, after a few hours' illness, on 3 November 1787, and was buried in the churchyard of Wormley.
While it made him a scholarly reputation, he struggled for church preferment, patronage and social acceptance.