Charles Ellicott Commentary 2 Chronicles 3:1

"Then Solomon began to build the house of Jehovah at Jerusalem on mount Moriah, where [Jehovah] appeared unto David his father, which he made ready in the place that David had appointed, in the threshing-floor of Ornan the Jebusite." — 2 Chronicles 3:1 (ASV)

SITE AND DATE (2 Chronicles 3:1–2).

At Jerusalem in mount Moriah. —Nowhere else in the Old Testament is the Temple site so specified. (Compare “the land of Moriah,” the place appointed for the sacrifice of Isaac, Genesis 22:2.)

Where the Lord appeared to David his father. —So the Septuagint; rather, who appeared to David his father. This is the meaning according to the common use of words. There is clearly an allusion to the etymology of MORIAH, which is assumed to signify “appearance of Jah.” (Compare Genesis 22:14.) Translate: “in the mount of the Appearance of Jah, who appeared to David his father.”

The Vulgate reads: “in Monte Moria qui demonstratus fuerat David patri ejus;” but nir’ah never means to be shown or pointed out. The Syriac, misunderstanding the Septuagint (Ἀμωρία), renders “in the hill of the Amorites.”

In the place that David had prepared. —This is no doubt correct, as the versions indicate. The Hebrew has suffered an accidental transposition.

In the threshingfloor of Ornan. —1 Chronicles 21:28; 1 Chronicles 22:1.