Charles Ellicott Commentary 2 Chronicles 4:20

"and the candlesticks with their lamps, to burn according to the ordinance before the oracle, of pure gold;" — 2 Chronicles 4:20 (ASV)

With (and) their lamps, that they should burn after the manner (according to the legal rule — 2 Chronicles 4:7). This is added by the chronicler, who omits five on the right and five on the left (Kings). The rest is as in Kings.