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.In the tabernacle of the congregation without the vail, 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. Exodus 27:20-21

As you study the Bible , you learn Oil is symbolic of The Holy Spirit. Anytime you see someone being “anointed with oil” or oil in the lamps, this is the anointing and filling of The Holy Spirit 

Notice also , this is a lasting ordinance, a commandment! This is a foreshadow for us to follow as an example, to keep our lamps full of oil

God commanded the Israelites to keep the lamps full burning with oil always! This is a foreshadow of the Holy Spirit to come, a foreshadow of Pentecost. Notice God wants the lamp to be full and burning in the tabernacle always. There are alot of foreshadows here:

Then shall the kingdom of heaven be likened unto ten virgins, which took their lamps, and went forth to meet the bridegroom. And five of them were wise, and five were foolish. They that were foolish took their lamps, and took no oil with them: But the wise took oil in their vessels with their lamps. Matthew 25:1-4

This reminds me of the Parable of the Ten Virgins Jesus taught, The Virgins being symbolic of The Church or Christians, 5 were wise and kept their lamps full of oil. While the other 5 were foolish and lazy and let their lamps run out.

When Christ returned , the 5 with the lamps full were ready to meet The Lord. While the other 5 who were not filled with oil, were not prepared to meet The Lord. What was the difference between the two groups? The Oil, 5 were filled with the Holy Spirit, the other 5 were not filled, became lazy and unfocused on their calling

Jesus ended the parable by saying to the ones who were spiritual asleep and empty of Oil “Truly I tell you , I dont know You” (Matthew 25:12”  These are scary words by Christ, this is why you should listen to his commands and instructions, keep your lamps full!