John Gill Commentary 1 Kings 6:30

"And the floor of the house he overlaid with gold, within and without." — 1 Kings 6:30 (ASV)

And the floor of the house he overlaid with gold within and
without .
] Both the floor of the holy place, and of the holy of holies; so the street of the new Jerusalem is said to be pure gold, (Revelation 21:21) ; this expresses the purity and magnificence of it, particularly the holy conversation of them that dwell in the church, in heaven, signified hereby.