You Can Enter the Holy Place
Once upon a time we were not worthy to enter the presence of God. Once upon a time we could not enter God’s holy place. We were separated from God, once upon a time.
The Ark of the Covenant was placed in the Holy place behind a veil inside the tabernacle that God instructed Moses to build. Moses was also instructed to consecrate Aaron and his sons as priests of God.

A Jewish High Priest wearing Hoshen and Ephod. The Holy of Holies is in the background. Image courtesy of wikipedia.org
The priest would once a year consecrate himself and then carry the blood of an animal inside the Holy Place to make atonement for his sins, his family and the children of Israel.
He could not enter the Holy Place at any time and in any manner or else he would instantly die. He had to be properly prepared because God was present in a cloud above the mercy seat.
As a result of Christ redemptive work the veil of the temple has been torn done and we are able to go before God anytime and in whatever state we are in and He will have mercy on us and pardon our iniquity.
Now the Lord spoke to Moses after the death of the two sons of Aaron, when they offered profane fire before the Lord, and died; and the Lord said to Moses: “Tell Aaron your brother not to come at just any time into the Holy Place inside the veil, before the mercy seat which is on the ark, lest he die; for I will appear in the cloud above the mercy seat.
Thus, Aaron shall come into the Holy Place: with the blood of a young bull as a sin offering, and of a ram as a burnt offering. He shall put the holy linen tunic and the linen trousers on his body; he shall be girded with a linen sash, and with the linen turban he shall be attired. These are holy garments. Therefore, he shall wash his body in water, and put them on. And he shall take from the congregation of the children of Israel two kids of the goats as a sin offering, and one ram as a burnt offering. (Leviticus 16:1-5)
