Hebrews 9:5

And above the ark were the Cherubim denoting God's glorious presence and overshadowing the Mercy-seat. But I cannot now speak about all these in detail.

Hebrews 9:8

And the lesson which the Holy Spirit teaches is this--that the way into the true Holy place is not yet open so long as the outer tent still remains in existence.

Treasury of Scripture Knowledge

Summary

The ark of the testimony, and the staves thereof, and the mercy seat,

The mercy seat

Bible References

The mercy seat

Hebrews 9:5
And above the ark were the Cherubim denoting God's glorious presence and overshadowing the Mercy-seat. But I cannot now speak about all these in detail.