Parallel
John 7:17
Nestle 1904 Greek New Testament · 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.