'Man' in the Bible

My little children, I am writing these things to you so that you may be without sin. And if any man is a sinner, we have a friend and helper with the Father, Jesus Christ, the upright one:

The man who says, I have knowledge of him, and does not keep his laws, is false, and there is nothing true in him:

But in every man who keeps his word, the love of God is made complete. By this we may be certain that we are in him:

Have no love for the world or for the things which are in the world. If any man has love for the world, the love of the Father is not in him.

My little children, let no man take you out of the true way: he who does righteousness is upright, even as he is upright;

But if a man has this world's goods, and sees that his brother is in need, and keeps his heart shut against his brother, how is it possible for the love of God to be in him?

No man has ever seen God: if we have love for one another, God is in us and his love is made complete in us:

If a man says, I have love for God, and has hate for his brother, his words are false: for how is the man who has no love for his brother whom he has seen, able to have love for God whom he has not seen?

Who is able to overcome the world but the man who has faith that Jesus is the Son of God?

If a man sees his brother doing a sin which is not bad enough for death, let him make a prayer to God, and God will give life to him whose sin was not bad enough for death. There is a sin whose punishment is death: I do not say that he may make such a request then.