He shall order the lamps on the pure candlestick,.... So called, as Jarchi suggests, for these two reasons, partly because it was made of pure gold, and partly because it was to be kept pure and clean, and free from ashes, by the priest; see Exodus 25:31,
before the Lord continually; which both respects the situation of the candlestick, and the work about it, which Aaron was to do continually before and in the presence of the Lord. Jarchi thinks this ordering respects the measure of oil for every night, which he says, according to the wise men, was half a log for every lamp, which was about a quarter of a pint of oil.

upon the pure candlestick--so called because of pure gold. This was symbolical of the light which ministers are to diffuse through the Church.

The pure candlestick - So called, partly because it was made of pure gold, partly because it was to be always kept clean.