The spiritual vision of early Nazarenes was derived from the doctrinal core of John Wesley's preaching and the holiness movement of the 19th century. The affirmations of the church include justification by grace through faith alone in Jesus Christ, sanctification by grace through faith united with good works, entire sanctification as an inheritance available to every Christian, and the witness of the Spirit to God's work in human lives. The holiness movement arose in the 1830s to promote these doctrines, especially Entire Sanctification, but splintered by 1900. The Church of the Nazarene remains committed to Christian holiness. The key emphasis of Wesley's theology relates to how Divine grace operates within the individual. Wesley defined the Way of Salvation as the operation of grace in at least three parts: Prevenient Grace, Justifying Grace, and Sanctifying Grace. Prevenient grace, or the grace that "goes before" us, is given to all people. It is that power which enables us to love and motivates us to seek a relationship with God through Jesus Christ.[90] This grace is the present work of God to turn us from our sin-corrupted human will to the loving will of the Father. In this work, God desires that we might sense both our sinfulness before God and God's offer of salvation. Prevenient grace allows those tainted by sin to nevertheless make a truly free choice to accept or reject God's salvation in Christ.[90] Justifying Grace or Accepting Grace[90] is that grace, offered by God to all people, that we receive by faith and trust in Christ, through which God pardons the believer of sin. It is in justifying grace we are received by God, in spite of our sin. In this reception, we are forgiven through the atoning work of Jesus Christ on the cross. The justifying grace cancels our guilt and empowers us to resist the power of sin and to fully love God and neighbor. Today, justifying grace is also known as conversion, "accepting Jesus as your personal Lord and Savior", or being "born again".[90][91] John Wesley originally called this experience the New Birth.[92] This experience can occur in different ways; it can be one transforming moment, such as an altar call experience,[93] or it may involve a series of decisions across a period of time.[94] Sanctifying Grace is that grace of God which sustains the believers in the journey toward Christian Perfection: a genuine love of God with heart, soul, mind, and strength, and a genuine love of our neighbors as ourselves. Sanctifying grace enables us to respond to God by leading a Spirit-filled and Christ-like life aimed toward love. Wesleyan theology maintains that salvation is the act of God's grace entirely, from invitation, to pardon, to growth in holiness. Furthermore, God's prevenient, justifying, and sanctifying grace interact dynamically in the lives of Christians from birth to death. For Wesley, good works were the fruit of one's salvation, not the way in which that salvation was earned. Faith and good works go hand in hand in Methodist theology: a living tree naturally and inevitably bears fruit. Wesleyan theology rejects the doctrine of eternal security, believing that salvation can be rejected (conditional security).[95] Wesley emphasized that believers must continue to grow in their relationship with Christ, through the process of Sanctification. A key outgrowth of this theology is the commitment of Nazarenes not only to the Evangelical Gospel of repentance and a personal relationship with God, but also to compassionate ministry to the poor.  

Distinctive Wesleyan emphases