Exodus 26:34

And you shall put the mercy seat upon the ark of the testimony in the most holy place.

Exodus 25:21

And you shall put the mercy seat on top of the ark; and in the ark you shall put the testimony that I shall give you.

Exodus 40:20

And he took and put the testimony into the ark, and set the poles on the ark, and put the mercy seat on top of the ark:

Hebrews 9:5

And over it the cherubim of glory shadowing the mercy seat; of which we cannot now speak particularly.

Treasury of Scripture Knowledge

Summary

And thou shalt put the mercy seat upon the ark of the testimony in the most holy place.

General references

Bible References

Put the mercy seat

Exodus 25:21
And you shall put the mercy seat on top of the ark; and in the ark you shall put the testimony that I shall give you.
Exodus 40:20
And he took and put the testimony into the ark, and set the poles on the ark, and put the mercy seat on top of the ark:
Hebrews 9:5
And over it the cherubim of glory shadowing the mercy seat; of which we cannot now speak particularly.

General references

Exodus 40:3
And you shall put in it the ark of the testimony, and cover the ark with the veil.
Mark 15:38
And the veil of the temple was torn in two from the top to the bottom.