Questions about God provision

Can we count on God to provide materially for His faithful children? Philippians 4:19 seems to promise that He always will. I've been clinging to this verse since losing my job, but it doesn't seem to have done me and my family much good. Over the past several months we've lost our home, our car, and most of our possessions. This has been hard, but it has also had the effect of raising bigger questions in my mind. I realize that many faithful Christians down through the ages have lived with unmet physical needs. They have struggled under circumstances much harsher than my own. The more I think about this, the harder it is to believe that God's promise is true. Can you help me resolve this crisis of faith?