"Wherefore seeing that in the holy scriptures, in the Trinity the unity of the Deity is plainly and clearly taught, it is meet that we do simply rest therein, and not curiously to search nor lust after any further knowledge in this life, then it which God hath revealed. Wherefore Christian Emperors a thousand years past did very well enact the pain of death against such as should spread abroad any new doctrine as concerning this Article, as reproachful to Godward should teach the contrary. For God doubtless would not be seen of Moses, & yet is seen in Christ Exo. 33 and 34. 2 Cor. 4. And moreover God hath in his Law decreed, that every one that hath sacrificed unto gods, besides the only God, should be slain, and as blasphemous towards God, should be taken out of the way [Exod. 22; Levit. 24]."
-- Henry Bullinger
Henry Bullinger, Common places of Christian religion, trans. John Stockwood (London, 1572), fols. 35-6.