We often hear that faith must be personal. “My faith,” they say. People might tell us they’ve persevered through trials due to their faith. Were it to have failed, they would’ve been lost. But they had enough. At least that’s what they say. I don’t know about you, but I get the impression that they think this faith is their own, as if they produced it. As if it were due to strength of character or moral upbringing.
On the contrary, though we must hold faith individually:
And to the one who does not work but believes in him who justifies the ungodly, his faith is counted as righteousness. Romans 4:5 English Standard Version (ESV)
It is not our faith, it is a gift of God so that we might not boast about ourselves.
For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast. For we are his workmanship, created in Christ Jesus for good works, which God prepared beforehand, that we should walk in them. Ephesians 2:8-10 (ESV)
For by grace are you saved. …God declares, that he owes us nothing; so that salvation is not a reward or recompense, but unmixed grace. The next question is, in what way do men receive that salvation which is offered to them by the hand of God? The answer is, by faith; and hence he concludes that nothing connected with it is our own…
Not of works. …Many persons restrict the word ‘gift’ to faith alone. But Paul is only repeating in other words the former sentiment. His meaning is, not that faith [only] is the gift of God, but that salvation [entirely] is given to us by God…
For we are his work. …The apostle affirms that we are God’s work, and that everything good in us is his creation; by which he means that the whole man is formed by his hand to be good. It is not the mere power of choosing aright, or some indescribable kind of preparation, or even assistance, but the right will itself, which is his workmanship; otherwise Paul’s argument would have no force.
Created to good works. …[Paul] says, that, before we were born, the good works were prepared by God; meaning, that in our own strength we are not able to lead a holy life, but only so far as we are formed and adapted by the hand of God. Now, if the grace of God came before our performances, all ground of boasting has been taken away…
To reiterate, faith is not a result of human will:
For he says to Moses, “I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion.” So then it depends not on human will or exertion, but on God, who has mercy Romans 9:15-16 (ESV)
To this, Calvin comments:
It is not then of him who wills, etc. …That none of you may think that they who are elected are elected because they are deserving, or because they had in any way procured for themselves the favor of God, or, in short, because they had in them a particle of worthiness by which God might be moved, take simply this view of the matter, that it is neither by our will nor efforts…that we are counted among the elect, but that it wholly depends on the divine goodness, which of itself chooses those who neither will, nor strive, nor even think of such a thing… [Emphasis mine]
Now, if we accept that faith is not of ourselves, we who profess faith must also realize that we, ourselves, are not our own, either.
Or do you not know that your body is a temple of the Holy Spirit within you, whom you have from God? You are not your own, for you were bought with a price. So glorify God in your body. 1 Corinthians 6:19-20 (ESV)