What and if ye shall see (ἐὰν οὐν θεωÏῆτε)
The question is marked by an aposiopesis, i.e., a breaking off of the sentence and leaving the hearer to complete it for himself. Literally, if then ye should behold, etc. - the completion would be, would not this still more cause you to stumble?
Ascend (ἀναβαιÌνοντα)
Rev., properly, renders the participle, ascending.
I speak (λαλῶ)
But the correct reading is λελαÌληκα, the perfect tense, I have spoken, or I have just spoken, referring to the preceding discourse.