Sinners who are saved from the wrath of God are justified only by grace only through faith. This faith is a confidence in God, his Word, his message of Jesus Christ and his work, and a trust in his promises.

To listen to much popular preaching, once one trusts in God, there are no further demands to meet in order to inherit eternal life on the last day. In contrast to this, The Westminster Larger and Shorter Catechisms teach:

Q. 152. What doth every sin deserve at the hands of God?
A. Every sin, even the least, being against the sovereignty, goodness, and holiness of God, and against his righteous law, deserveth his wrath and curse, both in this life, and that which is to come; and cannot be expiated but by the blood of Christ.

Q. 153. What doth God require of us, that we may escape his wrath and curse due to us by reason of the transgression of the law?
A. That we may escape the wrath and curse of God due to us by reason of the transgression of the law, he requireth of us repentance toward God, and faith toward our Lord Jesus Christ, and the diligent use of the outward means whereby Christ communicates to us the benefits of his mediation.

Q. 154. What are the outward means whereby Christ communicates to us the benefits of his mediation?
A. The outward and ordinary means whereby Christ communicates to his church the benefits of his mediation, are all his ordinances; especially the word, sacraments, and prayer; all which are made effectual to the elect for their salvation.

Q. 84. What doth every sin deserve?
A. Every sin deserveth God’s wrath and curse, both in this life, and that which is to come.

Q. 85. What doth God require of us that we may escape his wrath and curse due to us for sin?
A. To escape the wrath and curse of God due to us for sin, God requireth of us faith in Jesus Christ, repentance unto life, with the diligent use of all the outward means whereby Christ communicateth to us the benefits of redemption.

Q. 86. What is faith in Jesus Christ?
A. Faith in Jesus Christ is a saving grace, whereby we receive and rest upon him alone for salvation, as he is offered to us in the gospel.

Q. 87. What is repentance unto life?
A. Repentance unto life is a saving grace, whereby a sinner, out of a true sense of his sin, and apprehension of the mercy of God in Christ, doth, with grief and hatred of his sin, turn from it unto God, with full purpose of, and endeavor after, new obedience.

Q. 88. What are the outward means whereby Christ communicateth to us the benefits of redemption?
A. The outward and ordinary means whereby Christ communicateth to us the benefits of redemption, are his ordinances, especially the word, sacraments, and prayer; all which are made effectual to the elect for salvation.

For further reading see my exposition of the Westminster Standards on The Necessity of New Obedience.

Now, of course, I’m not really arguing here who understands the doctrine of justification more biblically. I’m just pointing out that any Pastor convinced of the Reformed position is going to find himself at odds with the popular Evangelical view of the Christian life.

Though I won’t endorse all the he says about dispensationalism, John Gerstner’s Wrongly Dividing the Word of Truth has a chapter on antinomianism that sets out this contrast rather starkly. I recommend it.