The blood was carried through the veil into the Holy of Holies from the outer court where the sacrifice was accomplished. Then the blood was spread upon the Mercy Seat, to cover the laws the Israelites had violated. By their faith in that ritual, God cast their sins away. The sacrifice was done in the outer court at the Laver and altar, then the blood was taken into the Holy of Holies to the Mercy Seat.
I simplified the 'sacrifice' meaning the 'blood'.. It is good to know you at least know the procedure... MY only point was that we common people were given direct access to the Heavenly Father in/through Christ without the prior required blood sacrifice via a fleshly priest. Few recognize that miracle that give direct access of the commoners to the Heavenly Father. Grace is the sacrifice Christ willingly made of His flesh body... There was nothing 'free' about what flesh man, orchestrated by the devil, did to Christ and there is nothing we children can do meaning the 'law' to pay for that price. AND fulfilled Hebrews 2:14. The devil and a numbered angels have already been judged to death... Jude, Ezekiel 28:12- Isaiah 14:12----