'Sons of God' in the Bible

Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.

Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.

And hereby are the sons of God known, and also the sons of the devil. All that work not righteousness, are not of God, nor he that loveth not his brother.

In this we know that we love the sons of God, when we love God, and keep his commandments.