'Going to and Fro' in the Bible

Now, therefore, lo! the king going to and fro before you, But, I, am old and grey-headed, and, my sons, lo! they are with you, - But, I, have gone to and fro before you from my youth until this day.

Now, therefore, this blessing which thy maid-servant hath brought to my lord, let it even be given unto the young men who are going to and fro at the feet of my lord.