I never said I would rate the passage from Hegesippus at 100% in favor of James not being a Christian. Far from that.Maintaining that Hegesippus is unreliable tends to undermine your argument that he can tell us anything about James, but this does at least explain why you reject parts of the testimony / legendary account of Hegesippus.
That would have been so easy to have James declares that his bro is (present tense) King and/or the Christ, but he did not.Incidentally, do you really believe that Hegesippus made a clear distinction between the idea of Christ and the idea of the eschatological Son of Man?
Your argument from silence depends on it.
I doubt Paul meant "a sister as wife". That would be scandalous, regardless if "sister" meant blood relative or a female believer.1 Cor 9 [ESV]
1 Am I not free? Am I not an apostle? Have I not seen Jesus our Lord? Are not you my workmanship in the Lord? 2 If to others I am not an apostle, at least I am to you, for you are the seal of my apostleship in the Lord. 3 This is my defense to those who would examine me. 4 Do we not have the right to eat and drink? 5 Do we not have the right to take along a believing wife,[a] as do the other apostles and the brothers of the Lord and Cephas?
[a] 1 Corinthians 9:5 Greek a sister as wife
This comes pretty close to declaring Cephas a brother who takes "a sister as wife." That seems to be the natural sense.
Translations abound. The one I prefer is "a sister, a wife". A "sister" as a female companion & believer if the apostle was not married, or a "wife" if he was married. For any of the two, one of their functions would to act as servant.
The Greek does not really say "a sister as wife" but "a sister wife".
I do not see your argument being very convincing. Except if you think Peter would be one of the brothers of the Lord, and these brothers of the Lord were just brothers, and not blood brothers of Jesus.
http://historical-jesus.info/108.htmlThere aren't many references to Cephas, but reading the few we have doesn't lead one to conclude that he was an unbeliever.
Cordially, Bernard