Though Presbyterians arrived in Ireland by way of Scotland in large numbers in the early 1600s, they rather quickly divided (or continued their divisions) into several splinter groups, including the conservative Old Light, Seceders (Burgher and
Antiburgher), (Marrow men) and Covenanters, moderate New Light, Arians that formed the Remonstrant synod, liberals, non-subscribers and Unitarians.
He was suspended and excommunicated as a teacher of
Antiburgher divinity students at Abernethy in 1763 for recommending in their philosophy classes Lord Kames, Essays on the principles of morality and natural religion (Edinburgh, 1751).