Before a Believer makes any effort of sanctification, the New Covenant has accomplished what God intended by blessing the Believer with access to spiritual wisdom and motivation to be a holy people; an unconditional covenant that a Believer cannot break (Jer 31:31-33). This enables the Believer to sanctify himself, separate himself from the profane, and devote and dedicate himself to God in the following manner:

1. Sanctify his mind. With the help of the Holy Spirit in learning the truth about Jesus and understanding the Bible, one reappraises the facts of life and worldview perspective (Rom 12:2; Col 1:9-10; 3:9-11; Philip 1:9; 2 Cor 10:4-5; Eph 4:17-24).

2. Sanctify his will. With the spiritual union of the Trinity, one's purpose in life is altered (Philip 2:12-13; 2 Cor 7:1).

3. Sanctify his character. In cooperating with the Holy Spirit, one produces the fruit of the Spirit (Gal 5:22; 1 John 2:29; 3:9-10).

4. Sanctify his body. In recognition of sanctification through the forgiveness of sin and the consecration by the indwelling of the Holy Spirit, one learns about the sanctity of his human body (1 Cor 3:16; 6:15-20; 9:27; Rom 6:12).

However this process of sanctification is determined to the extent of one's efforts of cooperating with the Holy Spirit. It requires the Believer's effort in (Rom 12:1-2):

Bible Study and Reflection: Bible study is a personal responsibility to deepen one's relationship with God (John 14:21), live as His people (Ps 1:1-3; Matt 4:4; John 17:17; Col 3:16) and discern good from evil (Heb 5:14; Philip 4:8).

Prayer and Worship: Prayer and worship are personal responsibilities to communicate with God in praise and thanksgiving (Eph 6:18; Philip 4:6; Eph 5:18-20).

Continual Self Improvement: The process of sanctification is a personal responsibility to run from the "old" self to the "new" without stopping or looking back (Rom 6:5-7; Col 3:9-10; 2 Cor 3:12-18; Philip 3:10-16; Heb 12:1-14).

Christian Fellowship: Christian fellowship is a personal responsibility towards other Believers as they have a responsibility towards you (1 Cor 12:12-26; Gal 6:1-2; Eph 4:1-16; Heb 10:24-25; 1 Thess 5:11) in serving God together (1 Pet 1:13-14; 2:5-9).

For deeper study

How does the Believer cooperate in sanctification?

How many times do you repent?

Does repentance help a Believer's faith?