When David was victorious in battle, others also benefited. We read how blessings lead to more blessings: Now when Tou king of Hamath heard that David had defeated all the army of Hadadezer king of Zobah, he sent Hadoram his son to King David, to greet him and bless him, because he had fought against Hadadezer and defeated him (for Hadadezer had been at war with Tou); and Hadoram brought with him all kinds of articles of gold, silver, and bronze.
Although these names may be unfamiliar to us, I pray that the principle of extending blessings is more than just an idea but is a part of our lives. David received these valuable gifts and treasures from other nations, and he blessed the Lord by dedicating these items to Him. David recognized that he did not win the battle alone – God was with him, and so he gave back to God as different nations gave to him.
Church economics are similar: God blesses people within a church family (in various ways) and out of gratitude we give a portion back to Him through the church (in various ways). A healthy church will then bless people both near and far who have a variety of needs, and the blessings continue. It’s not so much paying God back as it is applying the blessing He gives us to bless others. Being a part of the joy of His good blessings as they go forward sure can be a delight!