The water is the fish's element;
Take her from thence, none can her death prevent;
And some have said, who have transgressors been,
As good not be, as to be kept from sin.

2.

The water is the fish's element:
Leave her but there, and she is well content.
So's he, who in the path of life doth plod,
Take all, says he, let me but have my God.

3.

The water is the fish's element,
Her sportings there to her are excellent;
So is God's service unto holy men,
They are not in their element till then.

John Bunyan

http://www.poemhunter.com/poem/upon-the-fish-in-the-water/