20 And thou shalt command the children of Israel, that they bring thee pure oil olive beaten for the light, to cause the lamp to burn always.
21 In the tabernacle of the congregation without the veil, which is before the testimony, Aaron and his sons shall order it from evening to morning before the Lord: it shall be a statute for ever unto their generations on the behalf of the children of Israel.
We already heard about the seven lamps upon the menorah within the tabernacle, but today we learn about the oil that they would use. A wick would be placed into the oil that would absorb the oil up into its body. When lit, the wick would continually absorb up more oil as the previous oil was consumed in the flame. Being saturated by the oil, the wick would be able to tolerate the flame and not immediately turn to ash as it would if it were dry.
There is clear symbolism here, wherein the wick is our soul, the oil is the spirit of Christ, and the flame is the glory of God. Surrendering our lives to God’s glory is like being subjected to a fire, glorious and scorching at the same time, but we are able to tolerate its heat by the constant refreshing of His spirit. If the spirit in us is not refreshed, we will eventually run out and be left vulnerable to the flame. So, just as the priests were required to replace the oil “to cause the lamp to burn always,” we must continually seek spiritual refreshment to keep our spiritual flame forever alive. This brings to mind Jesus’s promise to be a fountain constantly springing up into everlasting life within us.
Another point that must be made is the requirement that the oil to be used was “pure oil olive beaten.” There were two ways of extracting the oil from olives. The first was to put them into a mill and grind them. This would extract a lot of oil quickly, but it would be filled with the sediment of the broken olives and particles from the stones used in the mill. The other method was to beat and bruise them in a pestle, after which the oil would flow out freely, extremely clear and pure.
Crushed olives, mixed with the sediment of the world, produces a cloudy oil. So, too, fragmented gospel, mixed with the trends of the world, produces an unclear vision. Pure truth takes precision and effort to extract. It includes beating out our misconceptions and bruising our ego, often flowing from our wounds. Of course, there is also symbolism of Christ as the olive that was beaten and bruised, and His spirit flowing out of his wounds for all of us.
Note: It can be difficult to visualize some of the structures described in these verses. Here is an excellent and extremely focused series of animations that show the visual form of the temple and its instruments, built up verse-by-verse from the Exodus record: https://youtube.com/playlist?list=PLpjohncRg94EZ55nJrbaKfi-lfeo3MFgl&si=6wm1J9Sdnu7LKYC_