John Calvin famously said the heart is a veritable factory of idols. I used to think this was just typically dark, hyperbolic, Calvinist misanthropy. The older I get, though, the more I concede it to be a sober statement of fact. Idols are our specialty. We churn them out at a furious rate, an extravagant assortment of false gods, deities, and spirits that we’ve cooked up over the centuries. Zeus, Odin, Marduk—some real classics. Our capacity to lie to ourselves about divinity is impressive and extends as wide as creation itself. More impressive, though, is our pantheon of false images of...