Exodus 27:20

THE OIL FOR THE LAMP.

(20) Thou shalt command the children of Israel that they bring thee pure olive oil.—This instruction had been already given (Exodus 25:2; Exodus 25:6), only not with such particularity. “Oil” had been required, but not “pure olive oil beaten.” By this is meant the best possible olive oil—that which was obtained by “beating,” or pounding in a mortar; which was free from various impurities that belonged to the oil crushed out, after the ordinary fashion, in a mill.

To cause the lamp to burn always—i.e., every night without intermission. Josephus says that three lights were kept burning both night and day (Ant. Jud., iii. 7, § 7); but there is nothing in Scripture to confirm this. The tabernacle would have received sufficient light during the daytime through the entrance curtain, which was of linen (Exodus 26:36), not to mention that the curtain may, when necessary, have been looped up. The lighting of the lamps every evening is distinctly asserted in Exodus 30:8; their extinction in the morning appears from 1 Samuel 3:3.