וַיַּ֥עַשׂ אֶת־נֵרֹתֶ֖יהָ שִׁבְעָ֑ה וּמַלְקָחֶ֥יהָ וּמַחְתֹּתֶ֖יהָ זָהָ֥ב טָהֽוֹר׃
And he made the lamps thereof, seven, and the tongs thereof, and the snuffdishes thereof, of pure gold.
Read kabbalistic (mystical) interpretation of Exodus 37:23: and classical mystical sources.