C. F. Keil and Franz Delitzsch on 1 Kings 9:24-25

1Ki 9:24-25 1Ki 9:24, 1Ki 9:25 contain two notices, with which the account of Solomon’s buildings is brought to a close. Both verses point back to 1Ki 3:1-4 (viz., 1Ki 9:24 to 1Ki 3:1, and 1Ki 9:25 to 1Ki 3:2-4), and show how the incongruities which existed at the commencement of Solomon’s reign were removed by his buildings. When Solomon married Pharaoh’s daughter, he brought her into the city of David (1Ki 3:1), until he should have finished his palace and built her a house of her own within it. After this building was completed, he had her brought up from the city of David into it. עלה, came up, inasmuch as the palace stood upon the loftier summit of Zion. אך is to be connected with אז which follows, in the sense of only or just as: as soon as Pharaoh’s daughter had gone up into the house built for her, Solomon built Millo.Nothing certain can be gathered from this notice as to the situation of this castle. The remark made by Thenius, to the effect that it must have joined that portion of the palace in which the harem was, rests upon the assumption that Millo was evidently intended to shelter the harem, - an assumption which cannot be raised into a probability, to say nothing of a certainty. The building of Millo immediately after the entrance of Pharaoh’s daughter into the house erected for her, may have arisen from the fact that David (? Solomon - Tr.) could not undertake the fortification of Jerusalem by means of this castle till after his own palace was finished, because he had not the requisite labour at command for carrying on all these buildings at the same time.