But by what means he now seeth, we know not; or who hath opened his eyes, we know not: he is of age; ask him: he shall speak for himself.

but how he now seeth, we know not; or who opened his eyes, we know not: ask him; he is of age; he shall speak for himself.

But how he now seeth, we know not; or who hath opened his eyes, we know not: ask himself: he is of age, let him speak for himself.

but how he now sees we do not know, or who has opened his eyes we do not know. He is of age: ask him; he will speak concerning himself.

and how he now seeth, we have not known; or who opened his eyes, we have not known; himself is of age, ask him; he himself shall speak concerning himself.'

But by what means he now sees, we know not; or who has opened his eyes, we know not: he is of age; ask him: he shall speak for himself.

but how it is that he can now see or who has opened his eyes we do not know. Ask him himself; he is of full age; he himself will give his own account of it."

But how it is he is now able to see, or who made his eyes open, we are not able to say: put the question to him; he is old enough to give an answer for himself.

But how it is that he now sees, we do not know. And who opened his eyes, we do not know. Ask him. He is old enough. Let him speak for himself."

but how it is that he can see now we do not know; nor do we know who it was that gave him his sight. Ask him – he is old enough – he will tell you about himself."

He is of age - Ἡλικιαν εχει, literally, he has stature, i.e. he is a full-grown man; and in this sense the phrase is used by the best Greek writers. See Kypke and Raphelius. Mature age was fixed among the Jews at thirty years.

But by what means he now seeth we know not,.... As to the third question they could say nothing to it, they were not present when the cure was wrought, and knew nothing of the matter, but what they had heard from their son, or from others, or both:
or who hath opened his eyes we know not; they had heard it was Jesus, and their son had doubtless told them it was he; but since they could say nothing of their own personal knowledge, they choose not to say anything of him:
he is of age; at man's estate, as, with the Jews, one was, who was at the age of thirteen years, if he could produce the signs of puberty: and such an one was allowed a witness in any case, but not under this age; nor if he was arrived to it, if the above signs could not be produced (q). This man very likely was much older, as may be thought from the whole of his conduct, his pertinent answers, and just reasoning: wherefore his parents direct the sanhedrim to him for an answer to their third question,
ask him, he shall speak for himself; or "of himself", as the Vulgate Latin and Ethiopic versions render it: their sense is, he is capable of giving an account of himself in this matter, and he will do it, and let him do it; put the question to him, and a proper answer will be returned; and so they left the affair to be issued in this way.
(q) Maimon. Hilchot Eduth, c. 9. sect. 7.