What is the ‘one’ faith?

Is the ‘one’ faith identical to the Apostles’ Creed, the doctrines of TSA, the Lutheran Formula of Concord, the Anglican Book of Common prayers, or is it the canonical scripture and sacred tradition, as interpreted by the magisterium of the Catholic Church?

When Paul wrote about the unity in ‘one body’ with ‘one faith’, none of the creeds existed, therefore the answer to what the ‘one’ faith is, has to be found somewhere else. It does not become easier if we look at the definition of the Christian faith made by the World Council of Churches (1), or a similar definition made by the Evangelical Alliance (2).

The older I get, the simpler I need it; and when I read Paul, I think that for him the ‘one faith’ could only be: “The faith that saves!”. A number of verses from Paul’s writings could be quoted to support this. One example is the verse which made Luther come with the statement “Faith alone” (3): “in the gospel the righteousness of God is revealed—a righteousness that is by faith from first to last”. However, in light of the context of the ‘one Lord’ in the reflection last week, these verses really add up the content of ‘one faith’:

If you declare with your mouth, “Jesus is Lord,” and believe in your heart that God raised him from the dead, you will be saved. For it is with your heart that you believe and are justified, and it is with your mouth that you profess your faith and are saved.
Rom 10:9-10

I am not implying that this is simple to grasp with our human intellect. It will forever remain a mystery. But for those who believe, it is as simple as that.

‘Manna’ for today:

There is only ‘one’ faith that can save me

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(1) See: The Lima document 
(2) See: The Lausanne Covenant
(3) Romans 1:17- For lovers of Latin: “Sola fide” is the word theologians use to say “Faith alone”.