You asked: "What is your criteria for a Brother or Sister in Christ?"
God says that those of us who have been born again by Him are His adopted children, i.e. brothers and sisters in Christ:
For by one Spirit are we all baptized into one body, whether [we be] Jews or Gentiles, whether [we be] bond or free; and have been all made to drink into one Spirit. I Corinthians 12:13
Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and [of] the Spirit, he cannot enter into the kingdom of God. That which is born of the flesh is flesh; and that which is born of the Spirit is spirit. Marvel not that I said unto thee, Ye must be born again. The wind bloweth where it listeth, and thou hearest the sound thereof, but canst not tell whence it cometh, and whither it goeth: so is every one that is born of the Spirit. - John 3:5-8
But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his. Romans 8:9
For as many as are led by the Spirit of God, they are the sons of God. For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father. The Spirit itself beareth witness with our spirit, that we are the children of God: - Romans 8:14-16
Now we have received, not the spirit of the world, but the spirit which is of God; that we might know the things that are freely given to us of God.
Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.
But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned.
But he that is spiritual judgeth all things, yet he himself is judged of no man. For who hath known the mind of the Lord, that he may instruct him? But we have the mind of Christ. - I Corinthians 2:6-16
She is, by the way, Catholic.
To God be the glory!
>>I pray you did not take my questions to be either nasty or baiting as that was not my intent.<<
No honestly, I didn’t at all. I also didn’t want you to think that I was trying to pull something. Sometimes when one reads a thread, it is not very evident who is asking and who is baiting. I try to be forthcoming.
And thank you for your answer about the title you give!