New International Version
Place the cover on top of the ark and put in the ark the tablets of the covenant law that I will give you.

American Standard Version
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.

Berean Study Bible
Set the mercy seat atop the ark, and put the Testimony that I will give you into the ark.

Douay-Rheims Bible
In which thou shalt put the testimony that I will give thee.

English Revised Version
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.

King James Bible
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.

World English Bible
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.

Young's Literal Translation
'And thou hast put the mercy-seat on the ark above, and unto the ark thou dost put the testimony which I give unto thee;

Exodus 25:21 Additional Translations ...