". . . one of the best things that could happen to many believers would be for them to be led to give away, all at one time, a substantial part of their savings. That is, they should give a substantial part of their capital. Why? Because there is something about giving away a sizable percentage of one's money -- and, of course, the amount would vary entirely from one individual to another -- that is spiritually invigorating. And there is seldom a case in which a large gift does not throw the Christian back on the Lord and increase the feeling that He is all wonderful and that He is more than able to care for the one who trusts Him. I have seen this happen in many instances. And I have never known a true Christian to be sorry for even the most sacrificial giving afterward."
James Montgomery Boice, Philippians: An Expositional Commentary, page 290.