Pope ST John Paul II was reiterating the continued teaching of the Church . . .which came from God Himself.
Apparently it is difficult for a non-Catholic to accept that the Church has authority to hold and keep the Catholic faith which comes to us through God’s word (the Scriptures), the apostles (who spread the gospel), and the Holy Spirit whom Christ promised, verbally and in written word, to send upon the Church to bring us to all truth.
The Pope did not ‘make up a teaching there’. He simply reminded all people what God had revealed through God’s own words, God’s own choice, God’s own consistent ‘holding’ throughout the centuries, and the Spirit’s confirmation of the same, that “The Church has no authority to ordain women”.
Look at the statement if you will.
He isn’t saying, “I the Pope say no ordaining women.”
He says “The Church” —that is, the entire faithful—‘has no authority’. OK, but we know that the Church does have certain authority, i.e. ‘Bind and loose’, the authority to forgive sins.
But the Church does not have ‘unlimited authority’ to bind and loose. The Church does not have the power to bind something that God has already loosened, NOR does it have the power to loosen something that God has already bound.
That’s why the Church cannot change the matter of the Eucharist to beer and pizza, or change marriage into the union of two men or two women. Likewise, it cannot change ordination into allowing ‘women priests’.
It cannot be done per God’s decision, not ‘men’s.