The text you are quoting, my friend, contains the words of Jesus
against wicked Jews. Jews who were
trying to kill him. Jews who
didn't do the deeds of Abraham.
Those words were
not pronounced against righteous Jews who still hadn't come to conclude anything about His nature, mission, etc. In the context of the Gospel, rejecting Jesus is to reject his Message of repentance, remain deliberately doing evil things. Please look: "
The Light has come into the world, and people loved the darkness rather than the Light; for their deeds were evil." (John 3:19)
I invite you to read the whole passage you have referred us to from John 8. I have made a concise transcription here and highlighted in green the words that indicate who were those Jews Jesus was accusing of not being from God.
I know that you are Abraham’s descendants; yet you are seeking to kill Me, because My word has no place in you. I speak of the things which I have seen with My Father; therefore you also do the things which you heard from your father.”
They answered and said to Him, “Abraham is our father.”
Jesus *said to them, “If you are Abraham’s children, do the deeds of Abraham. But as it is, you are seeking to kill Me, ...this Abraham did not do. You are doing the deeds of your father.”
They said to Him, “...we have one Father: God.”
Jesus said to them, “If God were your Father, you would love Me, for I came forth from God and am here; for I have not even come on My own, but He sent Me. Why do you not understand what I am saying? It is because you cannot listen to My word. You are of your father the devil, and you want to do the desires of your father. He was a murderer from the beginning, ... The one who is of God hears the words of God; for this reason you do not hear them, because you are not of God.”
... Therefore they picked up stones to throw at Him, but Jesus hid Himself and left the temple grounds.
In conclusion, if you are blessed with having a dentist who happens to be a Jew, and lives as Christ lived, bearing the fruits that come from the spirit, you would have absolutely NO GROUND to use this passage to say that he/she is worshiping other God than the God Christ adored.