Then the princes of the fathers' [houses], and the princes of the tribes of Israel, and the captains of thousands and of hundreds, with the rulers over the king's work, offered willingly;
"The people rejoiced"  (1 Chronicles 29:5c).  The greatest happiness that human beings may have comes from a clear conscience and generous giving to further the cause of truth and righteousness upon earth by contributions to the work of God through his church.