Technically correct, but from a more insightful and right understanding, a “half-brother” is a more APT term.
**
scborromeo.org/ccc.htm**
Catechism of the RCC
846 Re-formulated positively, it means that all salvation comes from Christ the Head through the Church which is his Body:
Basing itself on Scripture and Tradition, the Council teaches that the Church, a pilgrim now on earth, is necessary for salvation: the one Christ is the mediator and the way of salvation; he is present to us in his body which is the Church. He himself explicitly asserted the necessity of faith and Baptism, and thereby affirmed at the same time the necessity of the Church which men enter through Baptism as through a door. Hence they could not be saved who, knowing that the Catholic Church was founded as necessary by God through Christ, would refuse either to enter it or to remain in it.
847 This affirmation is not aimed at those who, through no fault of their own,**** do not know Christ and his Church:
Those who, through no fault of their own, do not know the Gospel of Christ or his Church, but who nevertheless seek God with a sincere heart, and, moved by grace, try in their actions to do his will as they know it through the dictates of their conscience - those too may achieve eternal salvation.
“Many” dear friend is NOT “All” essential
Here are the biblical evidences of the position of Christ and HIS CC. Note please the singular tense words chosen by Jesus {GOD}
Mt.-1-2
"And having called his twelve disciples together, **he gave them power over unclean spirits, to cast them out, and to heal all manner of diseases, **. [2] And the names of the twelve apostles are these:
The first, Simon who is called Peter,
Mt.16: 18-20
And I {GOD] say to THEE: That thou art Peter; and upon [YOU PETER] this rock I will build 2my MY CHURCH
{singular and a church cannot be separated fron its one set of Faith beliefs} ,
and the gates of hell shall not prevail against IT [singular} [/COLOR]. And I will give to THEE
{all of them implied here}** the keys of the kingdom of heaven.** And whatsoever YOU shalt bind upon earth, it shall be bound also in heaven: and whatsoever YOU shalt loose upon earth, it shall be loosed also in heaven.
Eph 2:20-23 Built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner stone: In whom all the building, being framed together, groweth up into an holy temple in the Lord.
Jn 15: 17-21
Jesus saith to Simon Peter: Simon son of John, lovest thou me more than these? He saith to him: Yea, Lord, thou knowest that I love thee.** He saith TO HIM PETER Feed my lambs.**
He saith to him again: Simon, son of John, lovest thou me? He saith to him: Yea, Lord, thou knowest that I love thee.
He saith TO HIM PETER: Feed my lambs.