"...if I am delayed, you may know how one ought to behave in the household of God, which is the church of the living God, the pillar and support of the truth." (1Ti 3:15 NRSVue)
How do we define or distinguish the real "church of the living God"? We can answer, "those that stick to the Bible", or "those that teach the true gospel", and such statements are true, but vague statements. There has to be a common faith that is to be defended: "Beloved, while eagerly preparing to write to you about the salvation we share, I find it necessary to write and appeal to you to contend for the faith that was once and for all handed on to the saints." (Jud 1:3 NRSVue)
Doesn't common sense dictate that that faith must be "ecumenical", in other words shared by all in the true Christian faith? There are four ecumenical creeds that are required to be called "Christian", for without a common belief, there is no meaning to being called "Christian" -
The Nicene Creed – Adopted in 325 AD at the First Council of Nicaea and expanded in 381 AD at the Council of Constantinople, this creed is a central statement of Christian belief shared by Catholic, Orthodox, and many Protestant churches.
thewestminsterstandard.org
The Apostles' Creed – An early Christian statement of faith used in various denominations, emphasizing the core tenets of Christianity.
thewestminsterstandard.org
The Chalcedonian Definition (451 AD) – Defines the nature of Christ as fully divine and fully human, accepted by most Christian traditions except some Oriental Orthodox churches.
thewestminsterstandard.org
The Athanasian Creed – A theological statement focused on the doctrine of the Trinity and the nature of Christ, historically influential in Western Christianity.
thewestminsterstandard.org
We can come into our day and present the:
Joint Declaration on the Doctrine of Justification (JDDJ)
That was a declaration by Lutherans with Roman Catholics, and later joined by Anglicans, Methodists and the Reformed. It is what is generally agreed upon facts about justification that all hold to, yet leaving room for variations among differing faith traditions -
"It does not cover all that either church teaches about justification; it does encompass a consensus on basic truths of the doctrine of justification and shows that the remaining differences in its explication are no longer the occasion for doctrinal condemnations."
Admittedly, an emphasis is given to the role of baptism that is held in the liturgical churches that are not held by those such as myself, for example Baptists; but overall the document is quite good and orthodox.
There will be of course, many crackpots and individualists who will reject any common statement of the Christian faith found in the Creeds and Confessions; but seldom will you see them present in written form their full creed or confession. Saying "No Creed but the Bible" has no true meaning or definition.
How do we define or distinguish the real "church of the living God"? We can answer, "those that stick to the Bible", or "those that teach the true gospel", and such statements are true, but vague statements. There has to be a common faith that is to be defended: "Beloved, while eagerly preparing to write to you about the salvation we share, I find it necessary to write and appeal to you to contend for the faith that was once and for all handed on to the saints." (Jud 1:3 NRSVue)
Doesn't common sense dictate that that faith must be "ecumenical", in other words shared by all in the true Christian faith? There are four ecumenical creeds that are required to be called "Christian", for without a common belief, there is no meaning to being called "Christian" -
The Nicene Creed – Adopted in 325 AD at the First Council of Nicaea and expanded in 381 AD at the Council of Constantinople, this creed is a central statement of Christian belief shared by Catholic, Orthodox, and many Protestant churches.
The Nicene Creed
The Nicene Creed(325 AD) I believe in one God, the Father Almighty, Maker of heaven and earth, and of all things visible and invisible. And in one Lord Jesus Christ, the only-begotten Son of God, begotten of the Father before all worlds; God of God, Light of Light, very God of very God;...

The Apostles' Creed – An early Christian statement of faith used in various denominations, emphasizing the core tenets of Christianity.
The Apostles’ Creed
The Apostles' Creed I believe in God, the Father Almighty, the Maker of heaven and earth, and in Jesus Christ, His only Son, our Lord: Who was conceived by the Holy Ghost, born of the virgin Mary, suffered under Pontius Pilate, was crucified, dead, and buried; He descended into hell.

The Chalcedonian Definition (451 AD) – Defines the nature of Christ as fully divine and fully human, accepted by most Christian traditions except some Oriental Orthodox churches.
The Chalcedonian Creed
The Chalcedonian Definition Therefore, following the holy fathers, we all with one accord teach men to acknowledge one and the same Son, our Lord Jesus Christ, at once complete in Godhead and complete in manhood, truly God and truly man, consisting also of a reasonable soul and body; of one...

The Athanasian Creed – A theological statement focused on the doctrine of the Trinity and the nature of Christ, historically influential in Western Christianity.
The Athanasian Creed
The Athanasian Creed(6th Century) Whosoever will be saved, before all things it is necessary that he hold the catholic faith. Which faith except every one do keep whole and undefiled; without doubt he shall perish everlastingly. And the catholic faith is this: That we worship one God in Trinity...

We can come into our day and present the:
Joint Declaration on the Doctrine of Justification (JDDJ)
That was a declaration by Lutherans with Roman Catholics, and later joined by Anglicans, Methodists and the Reformed. It is what is generally agreed upon facts about justification that all hold to, yet leaving room for variations among differing faith traditions -
"It does not cover all that either church teaches about justification; it does encompass a consensus on basic truths of the doctrine of justification and shows that the remaining differences in its explication are no longer the occasion for doctrinal condemnations."
Admittedly, an emphasis is given to the role of baptism that is held in the liturgical churches that are not held by those such as myself, for example Baptists; but overall the document is quite good and orthodox.
There will be of course, many crackpots and individualists who will reject any common statement of the Christian faith found in the Creeds and Confessions; but seldom will you see them present in written form their full creed or confession. Saying "No Creed but the Bible" has no true meaning or definition.