The sacred curtain, separating the Holy of Holies from the sanctuary, is designated by a different Hebrew word (peroketh). It is described as a “veil of blue, and purple, and scarlet, and fine twined linen of cunning work” (Exodus 26:31; Leviticus 16:2; Numbers 18:7).
“Stretcheth out the heavens as a curtain” (Isaiah 40:22), is an expression used with reference to the veil or awning which Orientals spread for a screen over their courts in summer. According to the prophet, the heavens are spread over our heads as such an awning. Similar expressions are found in Psalm 104:2l; compare Isa. 44:24; Job 9:8.