When it comes time to teaching my high school students what “paradox” means, I turn to the gospels because Jesus relished using them. How can you lose yourself and thus find yourself? It doesn’t make immediate sense, and the carnal mind will never comprehend.
God doesn’t work by contract. He doesn’t tell us what all the perks are. He expects us to live by faith. Your boss, on the other hand, is probably not going to give you a dime more than what’s in the contract. When you serve God, He simply asks you to lose yourself for the gospel.
Then He blesses you more than you can imagine. Of course, if you scoff at this and don’t try it out, you will never see the spiritual law activated when you give to God.