Much good came out of Trent, but Trent was a reactive council, not proactive (Church History does however show that most counsels, even those which the Lutherans and Anglicans accept were reactive).
There were other attempts at reform, Waldo and Hus for example; which all ended badly.
If one reads the Augsburg Confession, the Catholic refutation, and the Apology of the AC; the only conclusion one can come to is that reform and reconciliation were desired, not schism.
Had the Pope convened a council as promised, which was to include the Lutherans; the outcome of the reformation may have been quite different. However, there were politics involved, and the hearts of both sides became hardened, so it never happened... So we have Trent instead, and we were not invited to the party.
Note that St. Francis was considered quit a radical in his day; yet the Pope at that time was open-minded enough to grant Francis an audience; and many to this day consider him one of the great Saints of the RC Church.
While this has worked to maintain unity in many respects; there is no denying that the doctrines of infallibility and supremacy has also caused, and still causes and maintains much disunity in Christendom.
At present, relations and open dialogue between Rome and the Lutherans have never been better; but fellowship is still a long ways off.
Let's forget what would be if ... if... if ...
I hope there will be unity.
Sorry but it must be under the Pope. No matter how much disunity it causes, Papacy is unbreakable.
I am glad that things go well between Lutherans and Catholics. I hope they will get even better.
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Let me add something. Maybe the Children of Reformation do not realize how much means Papacy to Catholics. After the Reformation, the Holy Spirit created the Society of Jesus, the Jesuits, created by St Ignatius of Loyola, now the biggest Order of the Church. The Holy Spirit created it to counteract Reformation.
The Society of Jesus countered the principles of Reformation. The Jesuits, more than the 3 vows, have a 4th vow, the vow of Obedience to the Pope. They have the principle of obedience "perinde ac cadaver", meaning, like a corpse. You obey the Pope like a robot, you fulfill the wishes of the Holy Father totally. If the Holy Father tells a Jesuit: "Tomorrow you go to China", the Jesuit must be prepared to go. And do whatever the Pope wants, wherever he wants....
This tries to be similar to the obedience of Jesus Christ to the Father, Who was obedient to the Cross. Jesus asked the Father that, if possible, He be spared to this death but He wanted more the will of the Father than His. And he fulfilled it.
Obedience to the Pope is what God wants. Let us be clear. Nothing can hurt the power of the Pope.the Pope has many faults and sins? Yes. Some of them were corrupt? Yes. But this what God wanted. Remember that Jesus Christ said that the power of Pilates came from God (!!!) (but this is no reason for dictatorship: I believe that democracy is God's will today !!).
Let's not have illusions: Papacy is God's will. On this rock it is built the Church of God. The Church will never be democratic.
Let's not have illusions. This does not depend on one's own opinion. I may be even wrong, or right, it does not matter. what matters is the Will of God, what we see in History that is the Finger of God pointing to His Will.
If I saw it was Lutheranism, I would become Lutheran. If I saw it right the Anglicanism, I would become Anglican.
In the last 2000 years, I do not see other than the RCC.