Hebrews 9:3

9:3 And after the second curtain there was a tent called the holy of holies.

Hebrews 6:19

6:19 We have this hope as an anchor for the soul, sure and steadfast, which reaches inside behind the curtain,

Hebrews 10:20

10:20 by the fresh and living way that he inaugurated for us through the curtain, that is, through his flesh,