When it comes to our money, the natural thought is to hold it tightly for ourselves. This might be accurate if it weren't for the fact that we were made in the image of God and being restored to that image by grace. The more we mature in Christ, the more we discover that God is 100% generous. In fact, He is the Author of generosity. He wants us to become as He is through relaxing our grip on the possessions He entrusts to us in this life.
God knows how things are to operate. He has a plan for our lives and for His people and His kingdom. When we humbly follow His plan all is well. But when we violate His plan we miss what is best. And God is jealous for us to follow Him explicitly. He knows that if we miss this, we miss everything that matters and lasts.