Recently we studied the Torah portion Zachor, Exodus 27:20-30:10. Here we read about the construction of the Ark of the Covenant, the making of the oil for the lamps, the daily sacrifice of animals, and of the vestments of the priests. All the details that went into the vestments, the Ark, and the oil make me wonder, why such detail, but I realize that since we live in the physical world, we have our sense-smell, sight, taste, touch hearing-to go by, even as we worship God, who has no physical representation due to the prohibition on constructing idols. God is beyond all physical comprehension, but we are limited by the input of our senses. All of the physical requirements of worship-the vestments, the Ark, the sacrifices, and the oil-are means to utilize our senses to set our minds towards God.
We cannot confuse the Tabernacle or the ritual for God; but we have to have our minds receptive to receive spiritual inspiration as far as our senses and minds allow. Plus the sacrifices and the other rituals are on a daily and weekly basis, not once in a while, so that our minds are regularly God-focused.
Plus, since God instructs Moses on the construction of the Tabernacle and the other accouterments of worship, it shows God is present in the physical world; the idea of a separation between the spiritual and physical worlds is false, they are one and the same.