Holiness refers to God’s sovereignty as well as his character. As Christians we are called to emulate God. We can never take his place as creator and Lord of all, but we can take on the nature and character of God. In fact, we are required to do so:
As obedient children, ido not be conformed to the passions jof your former ignorance, but as he who called you is holy, you also be holy lin all your conduct, since it is written, “You shall be holy, for I am holy.” (1 Peter 1:14-16)
For I am the Lord who brought you up from the land of Egypt, to be your God; you shall be holy, for I am holy. (Leviticus 11:45)
We cannot attain to holiness on our own. In fact, God has given us his Holy Spirit to lead us into all truth and conform our spirit to the Spirit of God. The Apostle Paul writes:
Or do you not know that your body is a temple of the Holy Spirit within you, which you have from God, and that you are not your own? For you were bought with a price; therefore glorify God in your body. (1 Corinthians 6:19-20)
Living a holy and righteous life is our primary witness to the Christian Faith. However, it should appear that the message of holiness has been obscured by other, more popular messages such as blessing and prosperity.
Holiness is not optional for the Christian:
Pursue peace with everyone, and the holiness without which no one will see the Lord. (Hebrews 12:14)