Hebrews 9:3

and, after the second veil, a tabernacle which is called the "Holy of Holies:"

Matthew 27:51

And, behold, the veil of the temple was rent in two, from top to bottom; and the earth was shaken; and the rocks were rent;

Hebrews 6:19

which we have as an anchor of the soul, both sure and firm, and entering into the place within the veil;

Hebrews 9:8

the Holy Spirit signifying this, that the way into the Holies has not yet been made manifest, while the first tabernacle is yet standing;

Hebrews 10:19-20

Having, therefore, brethren, boldness for the entrance into the holy places by the blood of Jesus,

Treasury of Scripture Knowledge

Summary

And after the second veil, the tabernacle which is called the Holiest of all;

Bible References

The second

Hebrews 6:19
which we have as an anchor of the soul, both sure and firm, and entering into the place within the veil;
Hebrews 10:20
which He dedicated for us, a new and living way, through the veil, that is, His flesh;
Matthew 27:51
And, behold, the veil of the temple was rent in two, from top to bottom; and the earth was shaken; and the rocks were rent;

The holiest

Hebrews 9:8
the Holy Spirit signifying this, that the way into the Holies has not yet been made manifest, while the first tabernacle is yet standing;
Hebrews 10:19
Having, therefore, brethren, boldness for the entrance into the holy places by the blood of Jesus,