In the Bible, a steward is someone who is entrusted with someone else’s goods. Believers must realize everything we have belongs to God. Therefore everything we “own” actually belongs to God. We are simply stewards of His goods.
So what does this imply? First we should rid ourselves of attitudes like “It’s mine, I can wreck it if I want to”, because it’s not ours and the decision of whether or how to dispose of it doesn’t belong to us.
Because we have nothing and are simply holding our earthly possessions in trust, we are free from worry that we will “lose all we have.” The knowledge that God is owner of it all provides amazing freedom from slavery to “our” material things. If it belongs to God then He can do with those things as He wishes.