The problem is there are differences of opinion about the meaning of issues in the scripture. The early church had this issue. To seperate heretical issues from legitimate differences the Roman Creed was created in the 200s and updated to the Apostles Creed by 390. That Creed is a doctrinal statement defining who is and isn't a Christian. Every issue outside that is agree to disagree. Method of baptism for example.
The Apostles Creed
In Latin
[FONT="]Credo in Deum Patrem omnipotentem, Creatorem caeli et terrae,[/FONT]
[FONT="] et in Iesum Christum, Filium Eius unicum, Dominum nostrum,[/FONT]
[FONT="] qui conceptus est de Spiritu Sancto, natus ex Maria Virgine,[/FONT]
[FONT="] passus sub Pontio Pilato, crucifixus, mortuus, et sepultus,[/FONT]
[FONT="] descendit ad infernos, tertia die resurrexit a mortuis,[/FONT]
[FONT="] ascendit ad caelos, sedet ad dexteram Dei Patris omnipotentis,[/FONT]
[FONT="] inde venturus est iudicare vivos et mortuos.[/FONT]
[FONT="]Credo in Spiritum Sanctum,[/FONT]
[FONT="] sanctam Ecclesiam catholicam, sanctorum communionem,[/FONT]
[FONT="] remissionem peccatorum,[/FONT]
[FONT="] carnis resurrectionem,[/FONT]
[FONT="] vitam aeternam.[/FONT]
[FONT="]Amen.
[/FONT]
In Greek
[FONT="]Πιστεύω εἰς θεòν πατέρα, παντοκράτορα, ποιητὴν οὐρανοῦ καὶ γῆς.[/FONT]
[FONT="]Καὶ (εἰς) Ἰησοῦν Χριστòν, υἱὸν αὐτοῦ τòν μονογενῆ, τòν κύριον ἡμῶν,[/FONT]
[FONT="] τòν συλληφθέντα ἐκ πνεύματος ἁγίου, γεννηθέντα ἐκ Μαρίας τῆς παρθένου,[/FONT]
[FONT="] παθόντα ἐπὶ Ποντίου Πιλάτου, σταυρωθέντα, θανόντα, καὶ ταφέντα,[/FONT]
[FONT="] κατελθόντα εἰς τὰ κατώτατα, τῇ τρίτῃ ἡμέρᾳ ἀναστάντα ἀπò τῶν νεκρῶν,[/FONT]
[FONT="] ἀνελθόντα εἰς τοὺς οὐρανούς, καθεζόμενον ἐν δεξιᾷ θεοῦ πατρὸς παντοδυνάμου,[/FONT]
[FONT="] ἐκεῖθεν ἐρχόμενον κρῖναι ζῶντας καὶ νεκρούς.[/FONT]
[FONT="]Πιστεύω εἰς τò πνεῦμα τò ἅγιον, ἁγίαν καθολικὴν ἐκκλησίαν, ἁγίων κοινωνίαν,[/FONT]
[FONT="] ἄφεσιν ἁμαρτιῶν, σαρκὸς ἀνάστασιν, ζωὴν αἰώνιον.[/FONT]
[FONT="]Ἀμήν.
[/FONT]
In English
[FONT="]I believe in God, the Father almighty,
creator of heaven and earth.[/FONT]
[FONT="]I believe in Jesus Christ, his only Son, our Lord,
who was conceived by the Holy Spirit
and born of the virgin Mary.
He suffered under Pontius Pilate,
was crucified, died, and was buried;
he descended to hell.
The third day he rose again from the dead.
He ascended to heaven
and is seated at the right hand of God the Father almighty.
From there he will come to judge the living and the dead.[/FONT]
[FONT="]I believe in the Holy Spirit,
the holy catholic* church,
the communion of saints,
the forgiveness of sins,
the resurrection of the body,
and the life everlasting. Amen.[/FONT]
[FONT="]*that is, the true Christian church of all times and all places
What does it say concerning defining a Christian?
To me it's saying belief defines a Christian.
Actually put aside the term Christian as it's misnomer today.
This is what saves
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Romans 10:9-13
9 that if you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved. 10 For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation. 11 For the Scripture says, “Whoever believes on Him will not be put to shame.” 12 For there is no distinction between Jew and Greek, for the same Lord over all is rich to all who call upon Him. 13 For “whoever calls on the name of the Lord shall be saved.”
If that is a genuine confession then works will follow as a result of genuine conversion.
It's not those works that save us. I can't see that being said in the creed.
If that were the case then that would have been stated.
We know Jesus said
John 6:27-29
27 Do not labor for the food which perishes, but for the food which endures to everlasting life, which the Son of Man will give you, because God the Father has set His seal on Him.”
28 Then they said to Him, “What shall we do, that we may work the works of God?”
29 Jesus answered and said to them, “This is the work of God, that you believe in Him whom He sent.”
Then we know that works will follow, we will bear fruit.
Not because we have to but because we love him who first loved us.
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