Hebrews 9:25

Nor has he entered, that he should offer himself often, as the high priest enters the holy places every year with the blood of another:

Hebrews 10:19-20

Having therefore, brethren, confidence to enter the holiest by the blood of Jesus,

Matthew 27:51

And behold, the vail of the temple was rent in two from top to bottom. And the earth did shake, and the rocks were rent:

Hebrews 4:14-16

Seeing, then, that we have a great high priest, who has passed through the heavens, Jesus the Son of God, let us hold fast our confession.

Hebrews 9:3

But after the second vail, the tabernacle which is called the holy of holies;

Hebrews 9:7-8

But into the second, the high priest alone went, once during the year, not without blood, which he offered for himself, and for the errors of the people:

Treasury of Scripture Knowledge

Summary

And the LORD said unto Moses, Speak unto Aaron thy brother, that he come not at all times into the holy place within the vail before the mercy seat, which is upon the ark; that he die not: for I will appear in the cloud upon the mercy seat.

Bible References

He come not

Hebrews 9:3
But after the second vail, the tabernacle which is called the holy of holies;
Hebrews 10:19
Having therefore, brethren, confidence to enter the holiest by the blood of Jesus,

That he die not

Matthew 27:51
And behold, the vail of the temple was rent in two from top to bottom. And the earth did shake, and the rocks were rent:
Hebrews 4:14
Seeing, then, that we have a great high priest, who has passed through the heavens, Jesus the Son of God, let us hold fast our confession.
Hebrews 10:19
Having therefore, brethren, confidence to enter the holiest by the blood of Jesus,