The Torah records God's instruction: "And they shall make for Me a sanctuary, and I will dwell among them" (Exodus 25:8). The Mekhilta once again poses its characteristic question: why does the Infinite God need a building? The prophet Jeremiah quotes God Himself asking: "Do I not fill heaven and earth?" (Jeremiah 23:24). If God's presence already pervades every corner of reality, what could a structure of wood and gold and woven fabric possibly add?
The answer completes a sequence the Mekhilta has been building across multiple teachings. "And they shall make for Me a sanctuary" — for the sake of receiving reward for making it. God does not need the Tabernacle. Israel needs to build it.
The act of construction itself was the point. Every donated beam of acacia wood, every woven curtain, every gold fitting beaten into shape by Israelite hands — these were not materials God lacked. They were opportunities for human participation in something sacred. The building of the Mishkan (Tabernacle) united the entire nation in a shared creative project that mirrored, in miniature, God's own act of creation.
With this fourth and final example, the Mekhilta completes its argument. From first-born animals to altar wood to daily lambs to the sanctuary itself, the pattern is identical: God commands humans to do things God does not need, because the doing transforms the doer. The sanctuary is not a house for God. It is a workshop for human holiness — a place where the act of building, maintaining, and serving earns the builders a share in the divine.