What is the doctrine of holiness (sanctification)?
The doctrine of holiness (sanctification) is central to our salvation because God is holy. Today, there are churches that teach the doctrine of sanctification (holiness). Those churches that speak of holiness disagree in essence with one or more commandments in the Scriptures.
Disagreement with one commandment makes us guilty of all the other commandments (James 2:10, Ezekiel 33:13). If we are found to be guilty, we cannot be holy. A guilty verdict brings about death penalty with Satan. That is, if our belief (faith) is founded on death (disagreement, sin), we cannot be holy, even if we only have one blemish (Ephesians 1:4.).
If we can understand that Christianity disagrees with Judaism in the commandment of sabbath, for example, we can understand that Christianity can never speak of holiness to her followers and that a Christian who takes a stand against the sabbath can never be holy. 2 Peter chapter 2 explains why crafty Christianity would preach holiness (sanctification) to her followers.
Holiness in the Scriptures is attained when we comply with every single commandment in the Scriptures, without an iota of blemish (Matthew 5:17-18, Numbers 15:37-41, Leviticus 18:1-5.
If we comply with Leviticus 18:1-5, there is no blemish in us because we become holy only by keeping all the commandments of God, according to Numbers 15:37-41).
Would Satan disagree with the fact that the holy ones are the ones who keep every single commandment of God? You bet! Because he deceived Eve and Adam into breaking only one commandment. Only one commandment because of the doctrines found in James 2:10 and Ezekiel 33:13.
Understand that before Adam and Eve disagreed with God by not keeping His commandments, they were holy (Ephesians 1:4). They became sinners in need of the redemption of Jesus after they agreed with Satan and disagreed with God.
So, whenever we take a stand against any commandment of God or whenever we break any of His commandments, we also become sinners in need of redemption, of forgiveness, of repentance. Even when we believe in Jesus (1 John 2:1-6).
Forgiveness of sin happens only when we confess our sins (1 John 2:9). If while we believe in Jesus we are found to be sinners, we need to repent and ask for forgiveness because we read in Galatians 2:17 that Jesus is not a Minister of sin.