I use the terms head and heart to mean reasoning and feeling, adapting to the modern view that these two things are independent faculties. The Hebrew scriptures, however, see the heart as the seat of the mind, will, and emotions. Proverbs says, “As he thinketh in his heart, so is he.” In other words, rational conviction and experience might change my mind, but the shift would not be complete until it took root in my heart. And so I set out to reexamine my convictions and to strengthen my faith, so that it might prove more than a match for death.

Paul brand, an orthopedic surgeon, spent the first part of his medical career in India and the last part of his career in the U.S. “In the United States … I encountered a society that seeks to avoid pain at all costs,” he wrote in his recent memoir. “Patients lived at a greater comfort level than any I had previously treated, but they seemed far less equipped to handle suffering and far more traumatized by it.”

Why is it that people in prosperous, modern societies seem to struggle so much with the existence of evil, suffering, and death? In his book A Secular Age, the philosopher Charles Taylor wrote that while humans have always struggled with the ways and justice of God, until quite recently no one had concluded that suffering made the existence of God implausible. For millennia, people held a strong belief in their own inadequacy or sinfulness, and did not hold the modern assumption that we all deserve a comfortable life. Moreover, Taylor has argued, we have become so confident in our powers of logic that if we cannot imagine any good reason that suffering exists, we assume there can’t be one.

But if there is a God great enough to merit your anger over the suffering you witness or endure, then there is a God great enough to have reasons for allowing it that you can’t detect. It is not logical to believe in an infinite God and still be convinced that you can tally the sums of good and evil as he does, or to grow angry that he doesn’t always see things your way. Taylor’s point is that people say their suffering makes faith in God impossible—but it is in fact their overconfidence in themselves and their abilities that sets them up for anger, fear, and confusion.

When I got my cancer diagnosis, I had to look not only at my professed beliefs, which align with historical Protestant orthodoxy, but also at my actual understanding of God. Had it been shaped by my culture? Had I been slipping unconsciously into the supposition that God lived for me rather than I for him, that life should go well for me, that I knew better than God does how things should go? The answer was yes—to some degree. I found that to embrace God’s greatness, to say “Thy will be done,” was painful at first and then, perhaps counterintuitively, profoundly liberating. To assume that God is as small and finite as we are may feel freeing—but it offers no remedy for anger.

Another area of head work for me had to do with Jesus’s resurrection. Ironically, I had already begun working on a book about Easter. Before cancer, the resurrection had been a mostly theoretical issue for me—but not now. I’m familiar with the common charge that any belief in an afterlife is mere wish fulfillment without grounding in fact—and that belief in Jesus is in the same category as faith in the Flying Spaghetti Monster. But over the past 20 years, I’ve been drawn to the work of the British biblical scholar N. T. Wright, who mounts a historical case for Jesus’s bodily resurrection.

I returned to his material now, with greater skepticism than I had previously applied. I didn’t want to be taken in. But as I reread his arguments, they seemed even more formidable and fair to me than they had in the past. They gave me a place to get my footing. Still, I needed more than mental assent to believe in the resurrection.

The heart work came in as I struggled to bridge the gap between an abstract belief and one that touches the imagination. As the early American philosopher Jonathan Edwards argued, it is one thing to believe with certainty that honey is sweet, perhaps through the universal testimony of trusted people, but it is another to actually taste the sweetness of honey. The sense of the honey’s sweetness on the tongue brings a fuller knowledge of honey than any rational deduction. In the same way, it is one thing to believe in a God who has attributes such as love, power, and wisdom; it is another to sense the reality of that God in your heart. The Bible is filled with sensory language. We are not only to believe that God is good but also to “taste” his goodness, the psalmist tells us; not just to believe that God is glorious and powerful but also to “see” it with “the eyes of the heart,” it says in Ephesians.

On December 6, 1273, Thomas Aquinas stopped writing his monumental Summa Theologiae. When asked why by his friend Reginald, he replied that he had had a beatific experience of God that made all his theology “seem like straw” by comparison. That was no repudiation of his theology, but Thomas had seen the difference between the map of God and God himself, and a very great difference it was. While I cannot claim that any of my experiences of God in the past several months have been “beatific,” they have been deeper and sweeter than I have known before.

My path to this has involved three disciplines.

The first was to immerse myself in the Psalms to be sure that I wasn’t encountering a God I had made up myself. Any God I make up will be less troubling and offensive, to be sure, but then how can such a God contradict me when my heart says that there’s no hope, or that I’m worthless? The Psalms show me a God maddening in his complexity, but this difficult deity comes across as a real being, not one any human would have conjured. Through the Psalms, I grew in confidence that I was before “him with whom we have to do.”

The second discipline was something that earlier writers like Edwards called spiritual “soliloquy.” You see it in Psalms 42 and 103, where the psalmist says, “Why are you cast down, O my soul?” and “Bless the Lord, O my soul. And forget not all his benefits.” The authors are addressing neither God nor their readers but their own souls, their selves. They are not so much listening to their hearts as talking to them. They are interrogating them and reminding them about God. They are taking truths about God and pressing them down deep into their hearts until they catch fire there.

I had to look hard at my deepest trusts, my strongest loves and fears, and bring them into contact with God. Sometimes—not always, or even usually—this leads, as the poet George Herbert wrote, to “a kind of tune … softness, and peace, and joy, and love, and bliss, exalted manna … heaven in the ordinary.” But even though most days’ hour of Bible reading, meditation, soliloquy, and prayer doesn’t yield this kind of music, the reality of God and his promises grew on me. My imagination became more able to visualize the resurrection and rest my heart in it.

Most particularly for me as a Christian, Jesus’s costly love, death, and resurrection had become not just something I believed and filed away, but a hope that sustained me all day. I pray this prayer daily. Occasionally it electrifies, but ultimately it always calms:

And as I lay down in sleep and rose this morning only by your grace, keep me in the joyful, lively remembrance that whatever happens, I will someday know my final rising, because Jesus Christ lay down in death for me, and rose for my justification.

As this spiritual reality grows, what are the effects on how I live? One of the most difficult results to explain is what happened to my joys and fears. Since my diagnosis, Kathy and I have come to see that the more we tried to make a heaven out of this world—the more we grounded our comfort and security in it—the less we were able to enjoy it.

Kathy finds deep consolation and rest in the familiar, comforting places where we vacation. Some of them are shacks with bare light bulbs on wires, but they are her Sehnsucht locations—the spaces for which she longs. My pseudo-salvations are professional goals and accomplishments—another book, a new ministry project, another milestone at the church. For these reasons we found that when we got to the end of a vacation at the beach, our responses were both opposite and yet strangely the same.