I Chronicles 29:9

Then the people rejoiced, for that they offered willingly,.... They were not only glad that they had it to offer, but that they had hearts to do it; they found themselves quite free to do the work, and saw it was so with others, which gave them extreme pleasure: because with perfect heart they offered willingly to the Lord; not grudgingly, but cheerfully; not pressed and urged to it; not by constraint, but freely, and that with a pure view to the honour and glory of God: and David the king also rejoiced with great joy; it made his heart glad exceedingly, now he was old, and just going out of the world, to see this good work in such forwardness, on which his heart had been so much set; it gave him reason to believe it would be set about in good earnest, be carried on with vigour, and brought to perfection.

David has said what he had to say to Solomon. But he had something more to say to the congregation before he parted with them. I. He pressed them to contribute, according to their ability, towards the building and furnishing of the temple (Ch1 29:1-5). II. They made their presents accordingly with great generosity (Ch1 29:6-9). III. David offered up solemn prayers and praises to God upon that occasion (Ch1 29:10-20), with sacrifices (Ch1 29:21, Ch1 29:22). IV. Solomon was hereupon enthroned, with great joy and magnificence (Ch1 29:23-25). V. David, soon after this finished his course (Ch1 29:26-30). And it is hard to say which shines brighter here, the setting sun or the rising sun.