“Which, BTW, is why it is logical for Protestants to use Scripture to certify the correctness of a given teaching.”
And that leads to the many examples of protestants discovering that gay children getting married is a Biblical good, just as one example of error. There are many. Divorce, women preachers, gay preachers, etc.
“Can I assume by that you mean a gift to understand Scripture?”
Nope.
God’s gift to me was His Passion, His unmerited gift to me of Grace and His Church to renew that gift for the rest of my very short life here and my Eternal Life with Him in Heaven.
He sent The Twelve and their followers he gave them power and authority over all devils, and to cure diseases. And he sent them to preach the kingdom of God, and to heal the sick.
That began His Church. To pretend that He did not found a Church is to ignore the Holy Writ. To pretend that He wanted the many division among the Protestants is to again ignore His Holy Writ.
You may choose to believe He did NOT appoint MEN to be the Apostles and their successors but it is again, to ignore Holy Writ.
The MEN that God gives us to be our shepherds in this life are here at HIS fiat doing HIS will. When they betray him, and many do, they become another Judas. When they obey Him they are His agents among us.
To claim that ONLY the Catholics have the 'key' to ANYTHING Scripture is quite Phariseeical!