וְאֶת־כָּל־הַבַּ֛יִת צִפָּ֥ה זָהָ֖ב עַד־תֹּ֣ם כָּל־הַבָּ֑יִת וְכָל־הַמִּזְבֵּ֥חַ אֲֽשֶׁר־לַדְּבִ֖יר צִפָּ֥ה זָהָֽב׃
And the whole house he overlaid with gold, until all the house was finished; also the whole altar that belonged to the Sanctuary he overlaid with gold.
Read kabbalistic (mystical) interpretation of I Kings 6:22: and classical mystical sources.