So Luther says he is a non-Chalcedonian Christian? Same with Calvin?
For all his bluster about the Councils, I’ve yet to see anyone say that Lutherism is free from the ‘ecumenical councils’.
Councils, however, are not the word of God. Councils are made up of fallible men who often interpret the word of God accurately, but not always.
As the WESTMINSTER CONFESSION OF FAITH reminds us (with Scriptural proofs at the site)...
I. For the better government, and further edification of the Church, there ought to be such assemblies as are commonly called synods or councils.[1] II. As magistrates may lawfully call a synod of ministers, and other fit persons, to consult and advise with, about matters of religion;[2] so, if magistrates be open enemies to the Church, the ministers of Christ, of themselves, by virtue of their office, or they, with other fit persons upon delegation from their Churches, may meet together in such assemblies.[3] III. It belongs to synods and councils, ministerially to determine controversies of faith, and cases of conscience; to set down rules and directions for the better ordering of the public worship of God, and government of his Church; to receive complaints in cases of maladministration, and authoritatively to determine the same; which decrees and determinations, if consonant to the Word of God, are to be received with reverence and submission; not only for their agreement with the Word, but also for the power whereby they are made, as being an ordinance of God appointed thereunto in His Word.[4] IV. All synods or councils, since the apostles' times, whether general or particular, may err; and many have erred. Therefore they are not to be made the rule of faith, or practice; but to be used as a help in both.[5] IV. Synods and councils are to handle, or conclude nothing, but that which is ecclesiastical: and are not to intermeddle with civil affairs which concern the commonwealth, unless by way of humble petition in cases extraordinary; or, by way of advice, for satisfaction of conscience, if they be thereunto required by the civil magistrate.[6]
Of Synods and Councils
From the 'papist' authority of said councils, I'll say it. From the Scriptural results of the councils, no. Unfortunately, most of the later councils were full of papist authority-setting decrees. Non-Catholic Christians are not bound by them.