This signifies that Terrell Owens, the lamp burning with an inextinguishable fire, is going to play despite his recent injury.

Not of your walls, of your lifeblood and substance

This just further points to Owens because he wasn’t drafted by the Cowboys, but brought in as a free agent late in his career. This tells me he will have a big game and rejuvanate the offense.

The fields watered will come to shrink

This refers to Patrick Crayton’s comment after the second game against the Giants of how they basically went into the Giants’ house and urinated on them. The field will indeed seem to shrink as the Cowboys score all over the Giants, pissing on them again.

Before and after Mars to reign by good luck

A reference to Marion Barber, both because of the obvious name similarity and because Mars is the god of war, refering to Barber’s violent running style. And Barber will “reign” both before, because he is starting, and after because he will have a great day running the ball, especially putting the Giants away in the fourth quarter, and by good luck, scoring a couple of TDs off of Giants turnovers.