Take a farmer for example. When he sows in his field, he throws the seed away. The seed seems lost but in due time (during harvest) he gets it back multiplied. That rule applies to life in Christ as well. When we give our resources, time and energy to others in the name of Christ, we will gain more in return.
The Bible teaches us that God blesses those who give of their lives and resources. The New Testament tells of Jesus teaching us to measure our losses rather than our gains, sacrifices rather than self preservation, love given away rather than love taken in.
Give more and you will have more to give, trust more and you’ll earn more of it, give out love and you will have more love for others than before. Nothing will be lost but much will be gained.
2 Corinthians 9 : 6 - 15
He who sows sparingly will also reap sparingly, and he who sows bountifully, will also reap bountifully.