ה֥וּא יִבְנֶה־לִּ֖י בָּ֑יִת וְכֹנַנְתִּ֥י אֶת־כִּסְא֖וֹ עַד־עוֹלָֽם׃
He shall build Me a house, and I will establish his throne for ever.
Rashi
Yours, O Lord, are the greatness He gave praise to the Holy One, blessed be He, that He gave him so much strength to amass such a fortune for the building of the Temple, as it is written (above 17: 12): “He will build Me a House,” and near this [is written]: “O Lord, for the sake of Your servant and according to Your own heart, You have brought about all this greatness.” Now the expression of greatness can also refer to the building of the Temple, as it is written (above 22:5): “... and the House to build for the Lord, to magnify it on high.”