Money is spiritual

A steward is someone entrusted with another person's wealth or property and charged with responsibility of managing it in the owner's best interest. - Ben Patterson

A steward is entrusted with sufficient resources and the authority to carry out their designated responsibilities.

As a fundraiser I have come up with my own definition of what stewardship is - stewardship is the conscientious management of things that really matter.

God delegated to us authority over all His creation.

You made him to have dominion over the works of Your hands;
You have put all things under his feet,
All sheep and oxen,
And also the beasts of the field - Psalm 8:6-7

God expects us to use all the resources He gives us to best carry out our responsibilities.  A steward's  primary goal is to be found faithful by their master as the stewards uses the master's resources to accomplish the tasks delegated to them.

Our use of money and possessions is only one aspect of stewardship.  The tabernacle was built by people giving their time, energy, skills, money and possessions.  How we view and handle our money will correspond with how we view and handle our time, talents, family, church, vocation and every facet of life.

Eleven of the thirty-nine parables of Jesus deal with finances and money directly --  

• investment
• indebtedness
• hiring procedures and wage structures
• leasing
• capital, investments, banking, and interest
• money lenders, interest and debt cancellation
• storing up
• architectural planning, building construction and cost analysis
• finding lost money
• wealth, estate planning, spending
• financial management and debt reduction
• wealth and poverty
• giving and greed
• harvest

The parables normally have one central point that should not be obscured by uncertainties about secondary issues - the steward is praised for their shrewdness in using their master's money to invest in His relationships with people.

There will be a day when we will be terminated from this life, a day in which we shall give an account for our stewardship.  Consequently, we should use wisely what little remaining time and influence we have before our term of stewardship is done.

Jesus doesn't tell us to stay away from the mammon of unrighteousness or "worldly wealth," but to use it strategically.

And I tell you [learn from this], make friends for yourselves [for eternity] by means of the [a]wealth of unrighteousness [that is, use material resources as a way to further the work of God], so that when it runs out, they will welcome you into the eternal dwellings. - Luke 16:9

Money can be a tool for Christ.

“He who is faithful in a very little thing is also faithful in much; and he who is dishonest in a very little thing is also dishonest in much." - Luke 16:10

We are continually tested in little things.

God pays a great deal of attention to the "little things." He numbers the hairs on our head, cares for the lilies of the field and is concerned with the fall of a single sparrow.  What we do with the little time, a little talent, and a little money tells God a lot.

Therefore if you have not been faithful in the use of earthly wealth, who will entrust the true riches to you? - Luke 16:11

What are true riches?

Having been faithful in handling our resources in this life, we are granted leadership of others in the next.

And if you have not been faithful in the use of that [earthly wealth]which belongs to another [whether God or man, and of which you are a trustee], who will give you that which is your own? - Luke 16:12

 

Prosperity: Why?

In the context of financial giving --

And God will generously provide all you need. Then you will always have everything you need and plenty left over to share with others.         2 Corinthians 9:8

For God is the one who provides seed for the farmer and then bread to eat. In the same way, he will provide and increase your resources and then produce a great harvest of generosity in you. - 2 Corinthians 9:10

Why?

We don't have to wonder --

Yes, you will be enriched in every way so that you can always be generous. And when we take your gifts to those who need them, they will thank God. - 2 Corinthians 9:11

Of course, I don’t mean your giving should make life easy for others and hard for yourselves. I only mean that there should be some equality. Right now you have plenty and can help those who are in need. Later, they will have plenty and can share with you when you need it. In this way, things will be equal. - 2 Corinthians 8:13-14 

God wants us to be the conduit through which He meets the needs of others for whom He cared enough to die.

“God is not glorified when we keep for ourselves (no matter how thankfully) what we ought to be using to alleviate the misery of unevangelized, uneducated, unmedicated, and unfed millions. The evidence that many professing Christians have been deceived by this doctrine is how little they give and how much they own. God has prospered them. And by an almost irresistible law of consumer culture (baptized by a doctrine of health, wealth, and prosperity) they have bought bigger (and more) houses, newer (and more) cars, fancier (and more) clothes, better (and more) meat, and all manner of trinkets and gadgets and containers and devices and equipment to make life more fun. They will object: Does not the Old Testament promise that God will prosper his people? Indeed! God increases our yield, so that by giving we can prove our yield is not our god. God does not prosper a man's business so that he can move from a Ford to a Cadillac. God prospers a business so that 17,000 unreached people can be reached with the gospel. He prospers the business so that 12 percent of the world's population can move a step back from the precipice of starvation.” ― John Piper, Desiring God: Meditations of a Christian Hedonist

 It constitutes a lost opportunity to give to what could count for eternity.  Remember this verse --

“Do to others whatever you would like them to do to you. This is the essence of all that is taught in the law and the prophets. - Matthew 7:12

If you and your children were hungry, what would you want prosperous Christians to do for you?

How different John Wesley sounded than today's prosperity preachers --

“Do you not know that God entrusted you with that money (all above what buys necessities for your families) to feed the hungry, to clothe the naked, to help the stranger, the widow, the fatherless; and, indeed, as far as it will go, to relieve the wants of all mankind? How can you, how dare you, defraud the Lord, by applying it to any other purpose?”