Heb. 12:14 ” Follow after peace with all men, and the sanctification without which no man shall see the Lord.”
Another way to veiw it, is Holiness. To be freed from sin and enabled to realize the will of God in your life. Set apart for sacred use. So it is not us but God wanting to work in and through us.
1) Separation to God. What an honour we have. The tabernacle , then the temple cleansed by the Levites or sanctified so it would be pure for the High Priests to do their work.
2) Christ as our Holiness. The washing of water with the Word. Ephesians 5:26. We are reckoned holy as well as righteous, because we are clothed WITH the holiness of Christ, so then we are called saints.
3) Purification from evil. The priests had to be sanctified before drawing near to God. Ex. 19:22 So we too separate from the ungodly and be pure as we walk with Him. He already set us apart in Christ, now we need to set ourselves apart to God for His use.
4) Conformation to the Image of Christ. 1 John 3:2 “Beloved, now are we children of God, and it is not yet made manifest what we shall be. We know that, if He shall be manifested, we shall be like Him; for we shall see Him as He is.” This proceeds through out life and coming to full fruitation only when we see Him. What an awesome God we get to serve !!!