Faith includes
1. A Knowledge of the Facts of the Gospel. [Rom. 10:14]
2. A Belief of the Facts. [Rom. 4:20, 21]
3. Trust or Confidence in Christ our Saviour. [II Tim. 1:12+] This trust is the chief part of faith.
True faith is not a mere matter of the head, but of the heart. It is not a mere intellectual belief that God exists or that Christ lived and died; but it is a firm confidence that Christ is actually our Saviour, and that all our sins are washed away by His precious blood. Faith says, "The Son of God loved [I John 1:7] me, and gave Himself for me." [Gal. 2:20]
True faith is always preceded by repentance. The impenitent have no promise of forgiveness, and therefore cannot have faith. They cannot believe a promise which has not been given to them.
Regeneration and Conversion. Those whom the Holy Spirit has brought to repentance and faith are in a state of regeneration and conversion. The change which has taken place in them is called a new birth or regeneration, [John 3:5, 6] because a new life has been planted in them. [II Cor. 5:17+] It is called conversion, [Acts 3:19] because they have been converted or turned from sin to righteousness, from self to God.
It is not necessary that a Christian should be able to point to the exact time of his conversion. The important question is not, "When were we converted?" but, "Are we now in a converted state?" that is, "Are we now penitent and believing?"
Justification. All those who have true faith are justified: [Rom. 5:1+, Rom. 4:5] their sins are forgiven, and the righteousness of Christ is imputed (counted as belonging) to them. [Phil. 3:9] When we believe in Christ, all that He has done and suffered for us is regarded by God as if we had done and suffered it ourselves; [II Cor. 5:21, Rom. 8:1+] for Christ was our substitute. Consequently, those who believe in Christ are justified for His sake; that is, they are pronounced by God to be righteous and fit to enter into heaven.
By Faith Alone. We are justified and saved by faith alone, without works. [Rom. 3:28+] We shall enter heaven, not because we deserve to enter, [Gal. 2:16+] but only because we believe in Christ. Salvation is a Gift: acquired for us by Christ's holy life and innocent death; bestowed upon us freely by God's grace; and accepted by faith. [Eph. 2:8, 9+] Our faith is not a merit on account of which we are forgiven, but it is the hand with which we reach out and accept the free gift of forgiveness which God offers for Christ's sake.