Reformed teachers & believers who are well studied in the Doctrines of Grace will assert that God’s grace is irresistible in terms of Monergistic regeneration/conversion.
Your people shall be volunteers In the day of Your power; In the
beauties of holiness, from the womb of the morning, You have the dew
of Your youth.
Psalms 110:3 is a traditional reformed quotation of asserting believers will be volunteers in the day of God’s power to draw them.
See: Westminster Confession of Faith Chapter 10 (Of Effectual Calling) Article 1
So Reformed people assert and believe that God’s grace is irrisistable only in regeneration & calling (John 6:37-40, Romans 8:30)
1 Corinthians 10:13 will assume the implication of a synergistic mode of sanctification. We are to work to resist temptation in our lives.
R.C. Sproul, a Reformed theologian said this:
“Paul calls the Philippian believers to “work out your own salvation
with fear and trembling” (Phil. 2:12).
In using this phrase, Paul does not mean to say that we earn our
salvation by means of our works, but that our obedience (see his
commendation of his readers’ obedience earlier in the verse) plays a
role in our sanctification. In turn, our sanctification plays a role
in our persevering.
This is a clear call to labor, to toil, to put forth effort, and this
effort is not to be casual, light-hearted, or cavalier. The phrase
“fear and trembling” calls attention to the sobriety and earnestness
with which we are called to press into the kingdom of God.
Jonathan Edwards once said in a sermon that seeking the kingdom of God
should be the urgent, primary business of the Christian. We are called
to work as hard as we can to persevere. Note what follows this
exhortation: “For it is God who works in you, both to will and to work
for his good pleasure” (v. 13).
Here we see an example of the New Testament’s description of the
Christian struggle for perseverance as a synergistic work. Synergism
refers to a work that is done by two or more people.
By contrast, monergism means that only one person is exercising power
or effort. These words have a checkered background within the history
of theology because Reformed scholars and pastors have insisted over
and over again that the first step in by our salvation is a
monergistic work of God.
That is, Reformed theologians maintain that the Christian life begins
at regeneration, which is the work of the Holy Spirit in quickening us
and raising us from a state spiritual death to make us alive in
This is nothing short of a spiritual resurrection, and it is
accomplished by God alone, without any human effort. Reformed
theologians thus use the word monergism or monergistic to describe the
process of regeneration.
As a result, many people who hear this tend to think that a Reformed perspective teaches that the whole Christian life is monergistic.
Have you ever heard the phrase “Let go and let God”? In one sense,
that’s a perfectly good phrase, because sometimes we rely on ourselves
so much that we fail to find rest in God. But the phrase can become a
kind of license for what we call “quietism.”
This is a view that says, “If God wants to change me and if God wants
me to grow spiritually, it’s His job to do it, and I’m only as strong
spiritually as God makes me.” A person who thinks this way rewrites
the apostolic admonition: “It is God who works in me, both to will and
to work—so I don’t have to work out my salvation with fear and
This is a distortion—the passage calls us to labor because God is
working in us and with us; thus, the whole process of persevering is a
synergistic action, not a monergistic one. I am called to work, and
God is working as well. In the final analysis, whether my labor
becomes fruitful depends on the donum perseverantiae, that is, on the
gift of perseverance on God’s part to preserve me to the end.“.
- Can I lose my Salvation? By R.C. Sproul
So being tempted means we must resist temptation as a Christian, not assume God’s grace is irresistible in sanctification.