O LORD our God, all this store that we have prepared to build thee an house for thine holy name cometh of thine hand, and is all thine own.

Wesley's Notes

29:16 All thine own - In like manner we ought to acknowledge God in all spiritual things: referring every good thought, good desire, and good work to his grace.

Jamieson-Fausset-Brown Bible Commentary

16. all this store that we have prepared-It may be useful to exhibit a tabular view of the treasure laid up and contributions stated by the historian as already made towards the erection of the proposed temple. Omitting the brass and iron, and precious stones, which, though specified partly (1Ch 29:7), are represented in other portions as "without weight" (1Ch 22:3, 14), we shall give in this table only the amount of gold and silver; and taking the talent of gold as worth £5475 (the talent being 125 pounds in weight), the value of the gold will be about 73s. per ounce. The talent of silver is given at £342 3s. 9d., or 4s. 4½d. per ounce. The total amount of the contributions will be:

Sum accumulated, and in public treasury (1Ch 22:14): Gold £547,500,000 Silver 342,187,500 Contributed by David from his private resources [1Ch 29:4]: Gold 16,425,000 Silver 2,395,312 Contributed by the assembled rulers [1Ch 29:7]: Gold 28,000,000 Silver 3,421,875 A grand total of approximately £939,929,687

Though it has been the common practice of Eastern monarchs to hoard vast sums for the accomplishment of any contemplated project, this amount so far exceeds not only every Oriental collection on record, but even the bounds of probability, that it is very generally allowed that either there is a corruption of the text in 1Ch 22:14, or that the reckoning of the historian was by the Babylonian, which was only a half, or the Syrian, which was only a fifth part, of the Hebrew talent. This would bring the Scripture account more into accordance with the statements of Josephus, as well as within the range of credibility.

Matthew Henry's Concise Commentary

29:10-19 We cannot form a right idea of the magnificence of the temple, and the buildings around it, about which such quantities of gold and silver were employed. But the unsearchable riches of Christ exceed the splendour of the temple, infinitely more than that surpassed the meanest cottage on earth. Instead of boasting of these large oblations, David gave solemn thanks to the Lord. All they gave for the Lord's temple was his own; if they attempted to keep it, death would soon have removed them from it. They only use they could make of it to their real advantage, was, to consecrate it to the service of Him who gave it.