'Light' in the Bible

And this is the message which we have heard from him and announce unto you, that God is light, and in him is no darkness at all.

but if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus his Son cleanseth us from all sin.

Again, a new commandment write I unto you, which thing is true in him and in you; because the darkness is passing away, and the true light already shineth.

He that saith he is in the light and hateth his brother, is in the darkness even until now.

He that loveth his brother abideth in the light, and there is no occasion of stumbling in him.