I Believe that in saying all believers are saints, you are in fact saying that belief equals the qualification for sainthood.
David H...The problem with your analysis, is that you are comprehending "sainthood", as being related to Belief., and in fact, its not.
The "devil believes" .. and he's not a saint.
Every fallen Angel believes in Jesus, and they're not a saint.
Every single person who died today an Atheist, is currently in Hell, full of faith, completely convinced that Jesus is Lord and God is real, and their BELIEF is not qualifying them as a "Saint".
The devil has more of God in His life then he could ever want, Hes a true believer, and he is not a saint.
So, The best way to understand this word "Saint" as regarding the child of God is to recognize it as an Identification that is only given to God's redeemed.
Being a Saint, happens, because all the born again are identified as Saints.
All the born again, are "the temple of the Holy Spirit"
All the Born again, are "the body of Christ".
All the born again, are "brethren"
All the born again, are "the redeemed".
All the born again, are "SONS of God".
All the Born again, are "seated in heavenly places, In Christ"
All the born again, are, Translated from Darkness to Light"
All the born again, are "not under the law, but Under Grace".
All the born again, are "blood bought"
All the born again, are, "In Christ"
All the born again, are "ONE with God"
All the born again, are "Heirs of God"
All the born again, are "joint heirs with Jesus".
So, what im showing you, is that when you become a "new creation", you have gained a Heavenly IDENTIFICATiON that is ALL of what i just wrote.
And "SAINT" is just one of the titles, that belong to the born again.
Every Born again is a SAINT, in God's perspective.
Are you born again, reader? Then you are a Saint, in God's perspective, the instant you become a "new creation", "In Christ"