Catena Aurea on John 1:18: Augustine of Hippo

In the bosom of the Father, i. e. in the secret Presence1 of the Father: for God hath not the folde on the bosom, as we have; nor must be imagined to sit, as we do; nor is He bound with a girdle, so as to have a fold: but from the fact of our bosom being placed innermost, the secret Presence of the Father is called the bosom of the Father. He then who, in the secret Presence of the Father, knew the Father, the same hath declared what He saw.