Salvation is not of works.
Does this doctrine lead to problems?
It certainly has led to problems. That is, if mendacity and persecution are problematic. If salvation is of faith in a perfect atoning sacrifice, the person of faith needs nothing whatever, in spiritual and moral terms. Such a person is taught by the Holy Spirit directly, and does not need or seek any human mentor:
'The spiritual man makes judgments about all things, but he himself is not subject to any man's judgment.' 1 Co 2:15 NIV
It was this independence and divine presence that struck fear into the minds of the Jewish Sanhedrin, who were very aware of their own compromises and corruption. So they persecuted Jesus, and then the church. They persecuted from outside the church, but also from within it:
'Some of the believers who belonged to the party of the Pharisees stood up and said, "The Gentiles must be circumcised and required to obey the law of Moses." Ac 15:5 NIV
Of course, Paul later told the Galatians that they were foolish to take note of this fatal teaching. So, hardly before the church had begun, it was under deadly attack on the ground of its very doctrinal basis. Now bodily circumcision has not often since then been promoted as necessary for salvation, doubtless because of Paul's explicit warning, but many other things have been, usually works that seem desirable for Christians. But these 'good' things are never described in the NT as necessary for justification, because not one is, or can be. So, whether the Christian is told that there is something that he must
do, or something extra that he must
believe, in order to be accounted righteous, his response is to make correction, and indeed identify as a dangerous person whoever is attempting to persuade him.
One of the verses used by works-justifiers is this:
'You see that a man is justified by works and not by faith alone.' Jas 2:24 NASB
It is essential here to realise that James referred to justification
before men, not before God. If he really meant justification before God, this letter is not part of the Bible at all. But it is plain that James was writing to people who knew that justification was by faith: had probably read Paul's words, and taken them as excuse to sit back, ungrateful to Jesus for his sacrifice on their behalf. If love grows cold, there is nothing left at all, James was warning them.
As James also wrote, if a person is to be accepted by the church, the works inspired by the Spirit will be clear and abiding in the life of the saint. In the eyes of humanity, whether church or not church, a Christian is one who shows patience, kindness, willingness to forgive, self-control, humility, gentleness, reliability and love for all. If those fruits are lacking, say James, Paul, John and Jesus, there is no Spirit of God present, and no actual faith. And no salvation.