psalms 94:1-2

i saw a shirt at a mall today. it was a really ugly shirt, and the only reason it caught my eye was because it was hot pink and had my name written really big across the chest. right under that was a bible verse- psalms 94:1-2

i just looked it up,
and here's what it says:

O LORD, the God who avenges,
O God who avenges, shine forth.
Rise up, O Judge of the earth;
back to the proud what they deserve.

i'm not quite sure what this verse means.. i'll keep it in mind though.