To my knowledge, the terms Step Brothers and Sisters, did not exist in the period under concern, and was certainly not widely used. Between the frequent early deaths and remarriages, and the cultural attitude that the definition of a family depended on connection to the father only, 'brethren' not the children of Mary makes much sense. I might go further, in the case of Catholicism, the Church believes that the Aramaic for brethren, includes first cousins, and that is what the Church believes Christ's brethren are.
I think that the Orthodox accept the idea that they were Joseph's children, and Christ's step siblings. Since the perpetual virginity of Mary is accepted by most Christian churches, only some 'low' churches think that they could be Christ's half-siblings (children of Mary). Naturally, if one things these brethren were full siblings of Jesus, you don't believe that he was 'the only begotten Son of God', and are not any kind of Christian.
‘if one things’ = ‘if one thinks’. Go to bed, LCS.
Are you admitting here that you believe Mary to be a god? Or are you just ignorant of the fact that they were progeny of both Joseph and Mary. Of course in that case they would be half brothers and sisters of Our Lord.
I'm quite positive that you don't mean that other children of Mary would be classified by your church as "Begotten" of God also.....do you?
And.....I am a first century Christian.....predating your outfit by at least 300 years.
“Since the perpetual virginity of Mary is accepted by most Christian churches”
Perpetual virginity is an extra-Biblical, Catholic concept. Most other churches see no reason or evidence for her perpetual virginity.
OH?
I've not heard this.
Which ones are you thinking of?