1 Chronicles 22:1

LXX2012⁽ⁱ⁾ ¹ And David said, This is the house of the Lord God, and this [is] the altar for whole burnt offering for Israel.

Online Parallel Study Bible

1 Chronicles 22:1 David, foreknowing the place of the temple, prepares abundance for the building of it.
1 Chronicles 22:6 He instructs Solomon in God's promises, and his duty in building the temple.
1 Chronicles 22:17 He charges the princes to assist his son.

This is the house.David perhaps had some assurance that this was the place on which God designed that His house should be built; and perhaps it was this that induced him to buy not only the threshing-floor, but probably some adjacent ground also, as Calmet supposes, that there might be sufficient room for such a structure.
1 Chronicles 21:18-28; Genesis 28:17; Deuteronomy 12:5-7; Deuteronomy 12:11; 2 Samuel 24:18; 2 Chronicles 3:1; 2 Chronicles 6:5; 2 Chronicles 6:6
Psalms 78:60; Psalms 78:67-69; Psalms 132:13; Psalms 132:14; John 4:20-22
and this is the altar.
2 Kings 18:22; 2 Chronicles 32:12