Please cite where that was ever a doctrine of Luther's.
The doctrine was promoted by Luther's followers, and was a rallying cry of the Protestant Revolution. The idea had to come from somewhere.
Regardless, here's what R.C. Sproul has to say about it:
A brief historical recapitulation of the steps that led to Luther’s Sola Scriptura dictum may be helpful. After Luther posted his Ninety-Five Theses in 1517, a series of debates, correspondence,Interestingly, Sproul follows his logic to its inevitable conclusion, believing the Bible to be "a fallible collection of infallible books," since the Church canonized Scripture, and Sproul believes the Church to be fallible in matters of teaching.[p.104]
charges, and countercharges ensued, culminating in Luther’s dramatic stand at Worms in April 1521. The two most significant transitional points between the theses of 1517 and the Diet of Worms of 1521 were the debates at Augsburg and Leipzig. In October 1518 Luther met with Cardinal Cajetan of the Dominicans. Cajetan was acknowledged to be the most learned theologian of the Roman Curia. In the course of their discussions Cajetan was able to elicit from Luther his views on the infallibility of the pope. Luther asserted that the pope could err and claimed that Pope Clement VI’s bull Unigenitus (1343) was contrary to Scripture.[2]
In the summer of 1519 the dramatic encounter between Luther and Johannes von Eck took place at Leipzig. In this exchange Eck elicited from Luther the admission of his belief that not only could the pope err but church councils could and did err as well. It was at Leipzig that Luther made clear his assertion: Scripture alone is the ultimate, divine authority in all matters pertaining to religion. Gordon Rupp gives the following account:
Luther affirmed that "among the articles of John Huss and the Hussites which were condemned, are many which are truly Christian and evangelical, and which the church universal cannot condemn!" This was sensational! There was a moment of shocked silence, and then an uproar above which could be heard Duke George’s disgusted, "Gad, Sir, that’s the Plague! ..." Eck pressed his advantage home, and Luther, trapped, admitted that since their decrees are also of human law, Councils may err.[3]So by the time Luther stood before the Diet of Worms, the principle of Sola Scriptura was already well established in his mind and work. Only the Scripture carries absolute normative authority. Why? For Luther the sola of Sola Scriptura was inseparably related to the Scriptures’ unique inerrancy. It was because popes could and did err and because councils could and did err that Luther came to realize the supremacy of Scripture. Luther did not despise church authority nor did he repudiate church councils as having no value. His praise of the Council of Nicea is noteworthy. Luther and the Reformers did not mean by Sola Scriptura that the Bible is the only authority in the church. Rather, they meant that the Bible is the only infallible authority in the church. Paul Althaus summarizes the train of Luther’s thought by saying:
We may trust unconditionally only in the Word of God and not in the teaching of the fathers; for the teachers of the Church can err[p.105] and have erred. Scripture never errs. Therefore it alone has unconditional authority. The authority of the theologians of the Church is relative and conditional. Without the authority of the words of Scripture, no one can establish hard and fast statements in the Church.[4]
Regardless, you're free to believe that Luther didn't promote the teaching that "the Bible alone is the sole rule of faith." What's more important is that Protestants hold to this error.
So do you hold to this doctrine? If so, why?
“If your brother sins, go and point out their fault, just between the two of you. If they listen to you, you have won them over. But if they will not listen, take one or two others along, so that ‘every matter may be established by the testimony of two or three witnesses.’ If they still refuse to listen, tell it to the church; and if they refuse to listen even to the church, treat them as you would a pagan or a tax collector."Binding and loosing" is the Apostolic Teaching Authority that was given to the Apostles, and Peter pre-eminently.“Truly I tell you, whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven."
Matthew 16:19"I will give you the keys of the kingdom of heaven; whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven."
John 20:23
If you forgive anyone's sins, their sins are forgiven ... ... If you bind fast the sins of any, they remain bound ... if of any ye may loose the sins, they are loosed to them; if of any ye may retain, they have been retained ...