Jesus makes it clear that how we manage the earthly resources that have been given us is very important to God. In fact, He states that if we are faithful in this, which is the very least, we can then be trusted in the true riches of the kingdom. That means managing our finances is essential for our physical and spiritual well being.
He who is faithful in what is least is faithful also in much; and he who is unjust in what is least is unjust also in much. Therefore if you have not been faithful in the unrighteous mammon, who will commit to your trust the true riches?
(Luke 16:10-11)