'Brother' in the Bible

The one who says he is in the Light and yet hates his brother is in the darkness until now.

The one who loves his brother abides in the Light and there is no cause for stumbling in him.

But the one who hates his brother is in the darkness and walks in the darkness, and does not know where he is going because the darkness has blinded his eyes.

By this the children of God and the children of the devil are obvious: anyone who does not practice righteousness is not of God, nor the one who does not love his brother.

not as Cain, who was of the evil one and slew his brother. And for what reason did he slay him? Because his deeds were evil, and his brother’s were righteous.

Everyone who hates his brother is a murderer; and you know that no murderer has eternal life abiding in him.

But whoever has the world’s goods, and sees his brother in need and closes his heart against him, how does the love of God abide in him?

If someone says, “I love God,” and hates his brother, he is a liar; for the one who does not love his brother whom he has seen, cannot love God whom he has not seen.

And this commandment we have from Him, that the one who loves God should love his brother also.

If anyone sees his brother committing a sin not leading to death, he shall ask and God will for him give life to those who commit sin not leading to death. There is a sin leading to death; I do not say that he should make request for this.