"With:" Mountain or Molehill?

It's been a while.  Let's pick up where we left off, with verse 20.  As usual, we're going to quibble over the translation of specific Hebrew words.  :)

20. And I will make a covenant with them in that day,
    With the animals of the field,
        And with the birds of the skies,
        And with the creeping things of the ground,
And I will destroy bow, and sword, and battle from the earth.
    And I will make them lie down in safety.