Proverbs has a lot to say about wisdom (being wisdom literature after all), and it also has a number of things to say about finances. Lately, two passages have stuck out to me which I feel many forget about and/or don't apply when it comes to their functional way of "stewarding" the monetary resources God has given them. The first passage is from Proverbs 3:21-28:
 [21] My son, do not lose sight of these—
  keep sound wisdom and discretion,
 [22] and they will be life for your soul
  and adornment for your neck.
 [23] Then you will walk on your way securely,
  and your foot will not stumble.
 [24] If you lie down, you will not be afraid;
  when you lie down, your sleep will be sweet.
 [25] Do not be afraid of sudden terror
  or of the ruin of the wicked, when it comes,
 [26] for the LORD will be your confidence
  and will keep your foot from being caught.
 [27] Do not withhold good from those to whom it is due,
  when it is in your power to do it.
 [28] Do not say to your neighbor, “Go, and come again,
  tomorrow I will give it”—when you have it with you.
 (Proverbs 3:21-28 ESV)
