God commanded His people to provide light, as recorded in Exodus 27:20-21, instructing the children of Israel to bring pure oil of pressed olives for the lamp to burn continually in the tabernacle of meeting. This pure olive oil, free of contamination, was essential for producing a clean, steady, and clear light, necessary for the enclosed area where the priests performed their tasks. The production of this oil required a significant effort, likely involving a large quantity of olives, possibly two to three pounds per cup, suggesting a daily task of gathering and pressing to maintain the lamp's light. The lamp burned continually, tended by Aaron and his sons from evening until morning before the Lord, ensuring the light never went out, symbolizing a constant responsibility. In contrast, the olive oil used in the anointing recipe in Exodus 30:22-24, mixed with quality spices, does not specify a purity requirement or source, differing from the oil for the lamp which was the commanded responsibility of the children of Israel to bring. Despite the challenges of the wilderness environment, where olives may not have been prevalent, God provided the means for the Israelites to fulfill this command, whether through stores from Egypt, harvesting, or trade. This provision reflects His expectation for continual obedience and action in meeting His requirements.