'Behind The Curtain' in the Bible

You are to hang this curtain under the clasps and bring the ark of the testimony in there behind the curtain. The curtain will make a division for you between the Holy Place and the Most Holy Place.

But you with your sons will keep your priesthood to perform your priestly duties for everything at the altar and for {the area behind the curtain}. I give you the priesthood as a gift, but the stranger who approaches will be put to death."

We have this hope as an anchor for our lives, safe and secure. It enters the inner sanctuary behind the curtain.