The Pope NEVER said "in order to remove all doubt."  It was the CDF, in a "Responsum ad Dubium," who made this statement over a year *after* "Ordinatio Sacerdotalis" had been published, trying to suppress legitimate doubts about the implied dogmatic character of the letter.

I DID answer your question: Matthew 16:19, 18:18, gives the Church authority to teach the truths of the faith.  I also gave you a quotation from Fidei Depositum that shows that the Church by no means presumes she *already* has full understanding of the truths of the faith.  What else do you want?

You write, "The Church defines the truth for all time."  BUT, about the male-only priesthood being normative under the New Law, NOTHING HAS BEEN DEFINED, so we are going in circles.  

TRUTH is timeless, but the Church's understanding of the TRUTH is *work in progress.*  It took 1500+ years to *define* the 7 sacraments!  Sorry, I accept the HIATUS, but do not accept ecclesiastical FAKE NEWS as a divinely revealed dogma.