The blood is our eternal life covering. The Mercy Seat is our place for faith rest. The cherubim are the protection we have so not a single thing can make us die because they have the flaming sword of God's declaration of truth. The wings always give us the opportunity to be honored with God's life. The Tabernacle means that we are joined together inside of one Body. The Lord, through beaten gold, covers all through the blood that is on the Ark. All are covered and all demands are met by the seat itself. It is a place of power, of peace, of protection and of provision where we can enter into the plan of God.
If we understand what it means to be covered, then we will understand what it means to be a covering. What we receive, we give, and it covers others to purify them and make them rest in the presence of God without the dominion of sin through imparted righteousness. It is imputed to give us a motive to go on in the Word of God becoming our life through the Spirit as an eternal covering in the oneness of God's own definite life.
What happens when those who have mercy under the New Covenant do not accept it as the final word, and instead of making the Blood all, they walk over it and do despite to the Spirit of grace?
God says that vengeance is His and He will judge His people. If we know something and go against it anyway, then the natural gift of free volition takes over and puts our experience in the natural state of reaping what we have sown.