Jesus said, "If I bear witness of myself, my witness is not true" (John 5:31) yet he was God incarnate (God in the flesh). Why did he say this?
Referring to God the Father Jesus continues, "There is another who bears witness of me and I know that the witness which he witnesses of me is true" (John 5:32).
Several times during his ministry the Father speaks from heaven saying, this is my beloved Son in whom I am well pleased. Listen to him"(Lk 9:35).
Jesus said of the Holy Spirit, "...The Spirit of truth, has come, He will guide you into all truth; for He will not speak on his own authority, but whatever he hears he will speak..." (John 16:13).
These passages show us that the Trinity works together in unity and never separately.
Do we?