“All this,” said David, “all the details of this plan, the LORD has made clear to me in writing by His hand upon me.”
As for the general charge that David gave his son to seek God and serve him, the book of the law was, in that, his only rule, and there needed no other; but, in building the temple, David was now to give him three things: - 1. A model of the building, because it was to be such a building as neither he nor his architects ever saw.
Commenting on 1 Chronicles 28:11-21
All this, said David, the Lord made me understand in writing by his hand upon me,.... Either by an impulse of his Spirit on him, whereby it was as it were written on his mind, and as clearly represented to him, as if he had it in writing before him; though the Jews think that all was first made known to Samuel, or some other...
All [this, said David], the LORD made me understand in writing by [his] hand upon me, [even] all the works of this pattern. (k) For all this was left in writing in the book of the Law, , which the king was bound to put in execution, .