'Away' in the Bible

On the other hand, I am writing to you a new commandment that is truly in him and in you. For the darkness is fading away, and the true light is already shining.

And the world and its desires are fading away, but the person who does God's will remains forever.

Even now, little children, abide in him. Then, when he appears, we will have confidence and will not turn away from him in shame when he comes.

You know that the Messiah was revealed to take away sins, and there is not any sin in him.

Little children, keep yourselves away from idols.