I don’t think that scientists have ever claimed that they have authority over people.
As a matter of fact, they do claim to have authority over people, namely non-scientific people.
They even claim to have authority over each other, when they exercise peer review.
The kind of circular argument you meant to give is something like this:
(1) We know God exists.
(2) What authority have we that God exists?
(3) Because the Church tells us God has told us He exists.
(4) How do we know that the Church has this authority to tell us God exists?
(5) Because God conferred this authority on the Church?
That’s circular argument!
But you had said in an earlier post:
“The problem is that most of religious foundation authorities claim that they get their authority from God. How we are informed about God? Through
religious foundation.”
Actually, we are not informed about God through **religious foundation **but
by the words of Jesus Christ.
You either believe those words came from Jesus Christ or you do not.
There is no way to prove they did not, and the fact that the Church reports them as his words does not invalidate the words or even suggest circular reasoning.