God does not approve of bribery because of what it does to the heart. Forget about justice, poverty or the economy.
Bribery puts a monetary value on the very things that should be intangible.
More importantly, it changes the heart. You realise that are demanding mo a person not because they have asked you, but because you benefit monetarily from their request.
It stirs up greed. Indifference and blindness.
Ultimately, it places money over God. If one day we were to be bribed over something to do with our faith, we may not withstand that. Money > God