Exodus 26:33-35
And you shall hang up the veil under the clasps, that you may bring in thither within the veil the ark of the testimony: and the veil shall divide to you between the holy place and the most holy.
Nave's Topical Index—AKJV

Exodus 40:20,21
And he took and put the testimony into the ark, and set the staves on the ark, and put the mercy seat above on the ark:
Nave's Topical Index—AKJV

Hebrews 9:3-5,7,8
And after the second veil, the tabernacle which is called the Holiest of all;
Nave's Topical Index—AKJV