Parallel
Romans 2:19
Nestle 1904 Greek New Testament · Berean Standard Bible
πέποιθάς τε σεαυτὸν ὁδηγὸν εἶναι τυφλῶν φῶς τῶν ἐν σκότει
if you are convinced that you are a guide for the blind, a light for those in darkness,