Anyone who resolves to do the will of God will know whether the teaching is from God or whether I am speaking on my own.

Those who seek on their own seek their own glory; but the one who seeks the glory of him who sent him is true, and there is nothing false in him.

John 7:17-18.

“Yet I do not seek my own glory, there is one who seeks it and he is the judge”, answered Jesus. John 8:50.