Ezekiel 41:4

He measured the room at the end of the holy place. It was thirty-five feet long and thirty-five feet wide. The man said: This is the Most Holy Place (Holy of Holies).

1 Kings 6:20

This inner room was thirty feet long, thirty feet wide, and thirty feet high, all covered with pure gold. The altar was covered with cedar panels.

Hebrews 9:3-8

Beyond the second curtain was a room called the Most Holy Place.

Exodus 26:33-34

Hang up the veil under the clasps. Bring in the Ark of the Covenant there within the veil. The veil shall serve for you as a partition between the holy place and the holy of holies.

2 Chronicles 3:8

He made the most holy place. It was as long as the Temple was wide, thirty feet long. It was also thirty feet wide. He overlaid it with forty-five thousand pounds of fine gold.

1 Kings 6:5

A third-story annex, seven and one half feet high, was built against the outside walls. It was on the sides and the back of the Temple.

1 Kings 6:16

An inner room, called the Most Holy Place, was built in the rear of the Temple. It was thirty feet long and was partitioned off by cedar boards reaching from the floor to the ceiling.

Revelation 21:16

And the city lies foursquare. The length is as large as the width. He measured the city with the reed, fourteen hundred miles. The length and the width and the height of it are equal.

Treasury of Scripture Knowledge

Summary

So he measured the length thereof, twenty cubits; and the breadth, twenty cubits, before the temple: and he said unto me, This is the most holy place.

Bible References

Twenty cubits

1 Kings 6:20
This inner room was thirty feet long, thirty feet wide, and thirty feet high, all covered with pure gold. The altar was covered with cedar panels.
2 Chronicles 3:8
He made the most holy place. It was as long as the Temple was wide, thirty feet long. It was also thirty feet wide. He overlaid it with forty-five thousand pounds of fine gold.
Revelation 21:16
And the city lies foursquare. The length is as large as the width. He measured the city with the reed, fourteen hundred miles. The length and the width and the height of it are equal.

This

Exodus 26:33
Hang up the veil under the clasps. Bring in the Ark of the Covenant there within the veil. The veil shall serve for you as a partition between the holy place and the holy of holies.
Hebrews 9:3
Beyond the second curtain was a room called the Most Holy Place.