The Old and the New

Thus shall Aaron come into the holy place: with a young bullock for a sin
offering, and a ram for a burnt offering.
(Leviticus 16:3)

Once a year, and only once a year, the High Priest of Israel was to enter in to the Holy of Holies. This was when he could intercede for the sins of the people before God. Jesus was a perfect sacrifice for our sins. He needed only to suffer, and be sacrificed once for all of our sins for all time. Does this mean that everyone is going to heaven? No. In order for Jesus sacrifice to be counted for you, you need to accept Him. By His sacrifice, He paid the debt for our sins; therefore we owe Him our lives.

So Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation.
(Hebrews 9:28)