'Back' in the Bible

All the streams are going unto the sea, and the sea is not full; unto a place whither the streams are going, thither they are turning back to go.

And all that mine eyes asked I kept not back from them; I withheld not my heart from any joy, for my heart rejoiced because of all my labour, and this hath been my portion, from all my labour,

The whole are going unto one place, the whole have been from the dust, and the whole are turning back unto the dust.

As he came out from the belly of his mother, naked he turneth back to go as he came, and he taketh not away anything of his labour, that doth go in his hand.