16 He built twenty cubits on the hinder part of the house with boards of cedar from the floor to the walls (of the ceiling): he built (them) for it within, for an oracle, even for the most holy place.
*Minor differences ignored. Grouped by changes, with first version listed as example.
The meaning is, that at the distance of 20 cubits, measured along the side walls of the house from the end wall, Solomon constructed a partition, which reached from the floor to the ceiling and had a doorway in it. He thus made within the house, a sanctuary for a holy of holies.
And he built twenty cubits on the sides of the house,.... At the end or extremity of it, as the Targum; that is, he built the most holy place, which was twenty two cubits long, at the end of the holy place, which he wainscotted as the other:
both the floor and the walls with boards of cedar; or from the floor, including that, to the walls on each side, from wall to wall, and taking in them, they were all lined with cedar wood:
he even built them for it within, even for the oracle, even for the most holy place; which explains what building is spoken of, and that the inside of that was covered with cedar from bottom to top.
House - That is, the most holy place, which contained in length twenty cubits, which may be said to be on the sides Of the house, because this part took off twenty cubits in length from each side of the house, and was also twenty cubits from side to side, so it was twenty cubits every way. The oracle - the most holy place - The last words are added, to explain what he means by the word oracle, which he had not used before.
*More commentary available at chapter level.