Exodus 30:6

Put the altar in front of the curtain that is before the ark of the Testimony--before the atonement cover that is over the Testimony--where I will meet with you.

(New International Version)

'You shall put this altar in front of the veil that is near the ark of the testimony, in front of the mercy seat that is over the ark of the testimony, where I will meet with you.

(New American Standard Bible)

And thou shalt put it before the vail that is by the ark of the testimony, before the mercy seat that is over the testimony, where I will meet with thee.

(King James Version)