Here's a different way to look at this.
God and the individual Christian have a joint account of all monies and properties. (After all,
100% of everything we own, belongs to God.) The individual has the freedom to spend or invest the money any way he/she wants. God is more or less the Financial Advisor in this partnership. The individual Christian has the choice to adhear or ignore what the Advisor suggests, (leads). This advice is subject to change, just like the stock market. For example, the individual sets a budget to give x amount of dollars per year, to their church. This is a reasonable way to invest. However, let's say there is a major fire in the church. A massive increase in donations are needed, to rebuild. Obviously, the individual will be led, (advised), to increase the church budget, (investment).
The idea of giving to God, needs to be thrown out, completely. After all, a joint ownership of
100% of everything, is assumed.
Good stewartship and listening to the advice of our Financial Partner is the key to how much, and how often one gives to any particular organization. And this will change from one person to the next. We are not all in the same financial boat or circumstances. And, not all contributions need to be financial. Volunteer work is an invaluable rescource in any church.
John