The salvation of the Christian is entirely due to the grace of God – is is not earned. When we are saved, we are instantly and completely justified (aka justification), entirely by God’s grace and not of anything we have done. Every true Christian is completely and entirely justified at salvation.

For by grace you have been saved through faith. And this is not your own doing; it is the gift of God

Ephesians 2:8

After justification comes the process of sanctification; a process in which God, through the Holy Spirit, begins to change us more into the likeness of Jesus. It lasts for the rest of our earthly lives. Each Christian moves along in this process at a different pace. Unlike justification, it happens slowly over time and it takes effort. We are involved in this process. We fight and we struggle to overcome the flesh and we work to obey the Spirit and to grow in holiness.

A true Christian is one who has not only peace of conscience, but war within

JC Ryle – Holiness

Growing in holiness begins by taking more and fuller advantage of the means of grace the Lord has given to us, such as prayer, study of His Word, fellowship with other believers, and communion. Growing in holiness uncovers depths of peace and joy that will not be found elsewhere.

If you wish to grow in holiness and realize the peace and joy that Christ offers, take the battle to the front line. Discipline yourself to be in the Word daily; dig into it, listen to it, memorize it. Devote quite time to prayer each day. Regularly worship and fellowship with fellow believers. Participate in communion where we are once again brought to the foot of the cross and examine ourselves.