20 “You should command the sons of Israel so that they bring to you pure processed olive oil for the light, so that a lamp may be regularly set up to burn. 21 In the tent of meeting, outside the veil that is before the testimony, Aaron and his sons should tend it from evening to morning before the LORD. It should be a permanent rule to be observed throughout their generations by the sons of Israel.
keepers of the flame
Jesus taught that his followers should always be ready for his return. He used a parable to illustrate that principle. It was a story about ten virgins. This rule of maintaining fresh oil for the lamp in the tabernacle has a similar purpose. The keepers of the flame were testifying to the reality of the presence of God among them, and were never to let the light go out, as a reminder of that reality.
We keep the flame going when we are consistent in our testimony and behavior. That lets the world know that we are real, and so is our LORD.
LORD, help us to stay true to you over the long haul.
 Matthew 25:1-13.