[7:53] 1 tn Grk “whose betrayers and murderers you have now become, who received the law” The two consecutive relative clauses make for awkward English style, so the second was begun as a new sentence with the pronoun “You” supplied in place of the Greek relative pronoun to make a complete sentence in English.
[7:53] 2 tn Traditionally, “as ordained by angels,” but εἰς (eis) with the accusative here should be understood as instrumental (a substitute for ἐν [en]); so BDAG 291 s.v. εἰς 9, BDF §206. Thus the phrase literally means “received the law by the decrees [orders] of angels” with the genitive understood as a subjective genitive, that is, the angels gave the decrees.
[7:53] 3 tn The Greek word φυλάσσω (fulassw, traditionally translated “keep”) in this context connotes preservation of and devotion to an object as well as obedience.