ἐκμαρτυρεῖν
From LSJ
ἔστι δίκης ὀφθαλμός ὃς τά πανθ' ὁρᾶ → there is an eye of justice that sees everything, all-seeing justice
Greek > English (Woodhouse Verbs Reversed)
(see also ἐκμαρτυρέω): bear witness to a thing, bear witness to, bear witness, give evidence