7 And He spoke to men, and said what you have now heard, “The Son can do nothing of Himself, but what He sees the Father do.” Is there now any one, think we, that understands this? Is there any one, think we, in whom the eye-salve of the flesh has now its effect to the discerning in any fashion the brightness of the Divinity? He has spoken, let us speak too; He, because the Word; we, because of the Word. And why speak we, howsoever we do it, of the Word? Because we were made by the Word after the likeness of the Word. As far then as we are capable of, as far as we can be partakers of that ineffableness, let us also speak, and let us not be contradicted. For our faith has gone before, so that we may say, “I believed, therefore have I spoken.” I speak then that which I believe; whether or no I also see, or howsoever I see; He sees rather; ye cannot see it. But when I shall have spoken, whether he who sees what I speak of, believe that I see too what I have spoken of, or whether he believe it not, what is that to me? Let him only really see, and let him believe what he will of me.
Source: Sermons on Selected Lessons of the New Testament (New Advent)