Exodus 28-29
1) cleanse yourself from sin
2) become a "new man" and become a new person in the Lord (Aaron and his sons put on sacred clothing)
3) allow the spirit to guide you
4) offer sacrifices (I'm not speaking about animal sacrifices). This refers to putting the animal within you on the altar (the natural man).
5) keep the atonement of Jesus Christ present in your heart
6) listen to the word, do what God would have you do and walk in the way of God
