What does this mean: If ye knew Me, ye would know My Father also, but, I and My Father are one? It is a common expression, when you see one man very like another, If you have seen him, you have seen the other. You say this, because they are so like. And thus our Lord says, If ye had known Me, ye had known My Father also; not that the Father is the Son, but that the Son is like the Father.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Tract. xxxvii. 7