Define reject.
Define "accept as elder brethren".
Do catholics also recognize muslims as "elder" brethren?
If anyone professes faith in Christ, they are received by other Christians. Be they Jew or Gentile.
You know, roman catholics could clear up a lot of confusion if you dropped CCC 841.
To this day, I still haven't see a satisfactory answer as to why that was included in the CCC.
There is only one holy catholic apostolic church. If you imagine otherwise you are mistaken.
And it is not found in the RCC as we see today due to the utter reliance on Mary for salvation and the advancement of her as mediatrix, advocate, etc.
Do you think you worship the same God as is worshipped and adored by the Jews ?”
No.