This expression is used, not that we should suppose the ministry of the word to consist rather in seeing than hearing, but that, because by the word was meant not a word that can be spoken by the mouth, but one of real existence, we may understand that to have been not a common, but a Heavenly Word, to which the Apostles ministered.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).