In chapter 3 of this nine chapter long vision of Ezekiel's, the measuring of the temple continues. The outer area is now measured and we find out that the space required for this temple is too big for the available space. David explains why that is ok, because this is not a temple that is ever going to be physically built. NOTE: In the youtube comments section, @Noniksleft made this correction to the math: 500 x 6 x 52.4cm = 1.572Km