Parallel
John 7:17
Patriarchal Greek New Testament (1904) · Berean Standard Bible
ἐάν τις θέλῃ τὸ θέλημα αὐτοῦ ποιεῖν, γνώσεται περὶ τῆς διδαχῆς, πότερον ἐκ τοῦ Θεοῦ ἐστιν ἢ ἐγὼ ἀπ᾽ ἐμαυτοῦ λαλῶ.
If anyone desires to do His will, he will know whether My teaching is from God or whether I speak on My own.