John 10:25

“But the witness I have is greater than the witness of John; for the works which the Father has given Me to finish—the very works that I do—bear witness about Me, that the Father has sent Me.

“If I do not do the works of My Father, do not believe Me;

but if I do them, though you do not believe Me, believe the works, so that you may know and continue knowing that the Father is in Me, and I in the Father.”

We are from God. The one who knows God hears us; the one who is not from God does not hear us. From this we know the spirit of truth and the spirit of error.