by Robert Barclay, An Apology for the True Christian Divinity… (1678)
“ All other worship then, both praises, prayers, and preachings, which man sets about in his own will, and at his own appointment, which he can both begin and end at his pleasure, do or leave undone as himself sees meet, whether they be a prescribed form, as a liturgy, or prayers conceived extemporarily, by the natural strength and faculty of the mind, they are all but superstitions, will-worship, and abominable idolatry in the sight of God ”
