Exodus 39:35
the ark of the testimony and its poles, and the atonement lid;
Exodus 25:17
"You are to make an atonement lid of pure gold; its length is to be three feet nine inches, and its width is to be two feet three inches.
Hebrews 9:5
And above the ark were the cherubim of glory overshadowing the mercy seat. Now is not the time to speak of these things in detail.
Hebrews 9:8
The Holy Spirit is making clear that the way into the holy place had not yet appeared as long as the old tabernacle was standing.
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
Exodus 25:17
"You are to make an atonement lid of pure gold; its length is to be three feet nine inches, and its width is to be two feet three inches.
Hebrews 9:5
And above the ark were the cherubim of glory overshadowing the mercy seat. Now is not the time to speak of these things in detail.