Plants in the Bible generally represent facts, knowledge that can be gleaned from the world. Plants that can serve animals as food represent facts that have the potential to be put to use, ones that can lead to something good. A pasture, then, is an area that offers a great deal of this sort of useful, life-building knowledge. "Pasture" is often used as a verb in the Bible as well; to pasture animals means teaching people facts that can help them do what is good in life.

248. Whenever therefore a person was looking to heavenly things he was said to be walking erect, or what is the same, to be looking upwards or forwards; but whenever he was looking to bodily and earthly things he was said to be bent down towards the ground and to be looking downwards or backwards, as in Leviticus,

I am Jehovah your God, who brought You forth out of the land of Egypt, that you should not be their slaves; and I have broken the bars of your yoke and made you go erect. Leviticus 26:13.

In Micah,

You will not remove your necks from it nor go erect. Micah 1:3.

In Jeremiah,

Jerusalem sinned grievously, therefore they despised her, for they saw her nakedness; yea, she herself groaned, and turned away backwards. From on high He sent fire into my bones and made me return backwards; He made me desolate. Lamentations 1:8-13.

In Isaiah,

Jehovah your Redeemer turns wise men backwards and makes their knowledge foolish. Isaiah 44:24-25.