John Gill Commentary 1 Kings 6:3

"And the porch before the temple of the house, twenty cubits was the length thereof, according to the breadth of the house; [and] ten cubits was the breadth thereof before the house." — 1 Kings 6:3 (ASV)

And the porch before the temple of the house
Which stood at the east end of it:

twenty cubits [was] the length thereof, according to the breadth of the
house ;
which was from north to south, and of the same dimension, so that they exactly answered each other:

[and] ten cubits [was] the breadth thereof before the house ;
which being added to it, make the whole of the building, most holy place, holy place, and porch, seventy cubits; the height of the porch is not here given, but in (2 Chronicles 3:4) ; where it is said to be an hundred twenty cubits high, equal to the height of the house, with the chambers over it; but there the breadth of the porch is not given, as it is here; by these dimensions we may observe the difference between the tabernacle and the temple; the temple was twice as long, and as broad, and thrice as high as that, see (Exodus 26:8Exodus 26:16) . This fabric was an emblem of the church of God, sometimes called an holy temple, and the temple of the living God, (2 Corinthians 6:16) (Ephesians 2:21) .