The tabernacle is portable (cf. Num. 4:24–33) with upright frames and crossbars of manageable size and silver bases for the frames (26:15–26, 29). The use of acacia wood (26:15, 26, 32) reflects the Sinai environment, as this tree grows most frequently in that relatively barren terrain. Four layers of curtains, likewise in segments for easy assembly and dismantling, cover the structure. The innermost layer is fine linen with figures of cherubim worked into the material (26:…