At the end of 1 Chronicles, David is making preparations for the construction of the temple. Over the course of his kingship, he's gathered insane amounts of wealth and supplies to build the temple, but the Lord forbid him from actually doing so due to his being a man of war.
After David relays to the people all the gold, silver, bronze, etc., to the people, he asks them "Who then will offer willingly, consecrating himself today to the LORD?" The people answered as one. As David had done, the people gave gold, silver, bronze, iron, and those who had precious stones gave those.
Although the scene is not described in any amount of detail, it must have been quit a sight to see. First Chronicles 29:9 describes the people's response to their giving: "Then the people rejoiced because they had given willingly, for with a whole heart they had offered deeply to the LORD. David the king also rejoiced greatly." Again, not a lot of detail, but can't you see the smiles, can't you hear the noise as the people clamor and celebrate their gift to God?
Notice how they gave: with a whole heart. Somehow in this moment of preparation for the building of the Lord's house, the people were united not only as a group but as individuals--in their whole being. Despite whatever sins they have committed or will commit, despite the struggles of war and conflict with the Philistines, the people are altogether glad to give in this moment. What's more, they seem to "get" what they're doing, which is collectively honoring God in they're giving.
The day ends with a feast--a tremendous celebration to the Lord in which they eat and drink "before the LORD... with great gladness" (1 Chronicles 29:22). All is right among them and between them and God. A joyous occasion indeed.
Have you ever found yourself in a "whole heart," all the way committed to and delighted in the Lord--even for a moment? Has it led you to give?