'Brother' in the Bible

He who says he is in the light and hates his brother, is in the darkness even until now.

He who loves his brother remains in the light, and there is no occasion for stumbling in him.

But he who hates his brother is in the darkness, and walks in the darkness, and doesn't know where he is going, because the darkness has blinded his eyes.

In this the children of God are revealed, and the children of the devil. Whoever doesn't do righteousness is not of God, neither is he who doesn't love his brother.

unlike Cain, who was of the evil one, and killed his brother. Why did he kill him? Because his works were evil, and his brother's righteous.

We know that we have passed out of death into life, because we love the brothers. He who doesn't love his brother remains in death.

Whoever hates his brother is a murderer, and you know that no murderer has eternal life remaining in him.

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

If a man says, "I love God," and hates his brother, he is a liar; for he who doesn't love his brother whom he has seen, how can he love God whom he has not seen?

This commandment we have from him, that he who loves God should also love his brother.

If anyone sees his brother sinning a sin not leading to death, he shall ask, and God will give him life for those who sin not leading to death. There is a sin leading to death. I don't say that he should make a request concerning this.