Exodus 25:21
ESV
And you shall put the mercy seat on the top of the ark, and in the ark you shall put the testimony that I shall give you.
NIV
Place the cover on top of the ark and put in the ark the tablets of the covenant law that I will give you.
NASB
Then you shall put the atoning cover on top of the ark, and in the ark you shall put the testimony which I will give to you.
CSB
Set the mercy seat on top of the ark and put the tablets of the testimony that I will give you into the ark.
NLT
Place inside the Ark the stone tablets inscribed with the terms of the covenant, which I will give to you. Then put the atonement cover on top of the Ark.
KJV
And thou shalt put the mercy seat above upon the ark; and in the ark thou shalt put the testimony that I shall give thee.
NKJV
You shall put the mercy seat on top of the ark, and in the ark you shall put the Testimony that I will give you.