The upper chambers - Compare 1 Chronicles 28:11. Their position is uncertain. Some place them above the holy of holies, which was ten cubits, or fifteen feet lower than the main building (compare 1 Kings 6:2, 1 Kings 6:20); others, accepting the height of the porch 120 cubits 2 Chronicles 3:4, regard the "upper chambers" or "chamber" ὑπερῷον huperōon, Septuagint), as having been a lofty building erected over the entrance to the temple; others suggest that the chambers intended are simply the uppermost of the three sets of chambers which on three sides surrounded the temple (see 1 Kings 6:5-10). This would seem to be the simplest and best explanation, though we cannot see any reason for the rich ornamentation of these apartments, or for David's special directions concerning them.

The weight of the nails was fifty shekels - Bolts must be here intended, as it should be preposterous to suppose nails of nearly two pounds' weight.

The supper chambers - Probably the ceiling is meant.

And the weight of the nails was fifty shekels of gold. And he overlaid the upper chambers with gold.

3:9 Nails - Each of the nails, screws, or pins, by which the golden plates were fastened to the walls, weighed, or rather was worth, fifty shekels, workmanship and all. Upper chambers - Rather, the roof.

3:1-17 The building of the temple. - There is a more particular account of the building of the temple in #1Ki 6". It must be in the place David had prepared, not only which he had purchased, but which he had fixed on by Divine direction. Full instructions enable us to go about our work with certainty and to proceed therein with comfort. Blessed be God, the Scriptures are enough to render the man of God thoroughly furnished for every good work. Let us search the Scriptures daily, beseeching the Lord to enable us to understand, believe, and obey his word, that our work and our way may be made plain, and that all may be begun, continued, and ended in him. Beholding God, in Christ, his true Temple, more glorious than that of Solomon's, may we become a spiritual house, a habitation of God through the Spirit.