Or, I said to you, refers to the testimony of the Scriptures, of which He said above, They are they which testify of Me; and again, I am come in My Father’s name, and ye receive Me not. That ye have seen Me, is a silent allusion to His miracles.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Hom. xliv. 2. c. 5.