Note the logic in this passage from his writings: “‘ Of that day, and that hour knoweth no man, no not the angels which are in heaven, neither the Son, but the FATHER. ’
उदाहरणार्थ, १८२४ मध्ये, ग्रू यांनी त्रैक्य या शिकवणीचे खंडन करणारा एक तर्कसंगत लेख लिहिला.