Parallel
Ephesians 5:13
Patriarchal Greek New Testament (1904) · Berean Standard Bible
τὰ δὲ πάντα ἐλεγχόμενα ὑπὸ τοῦ φωτὸς φανεροῦται· πᾶν γὰρ τὸ φανερούμενον φῶς ἐστι.
But everything exposed by the light becomes visible (note: SBL begins verse 14 after visible,), for everything that is illuminated becomes a light itself.