The papacy is no stranger to controversy.

In many ways it’s Catholicism’s defining doctrine—but also its most divisive. From medieval pontiffs who acted like princes to a modern pope whose every casual statement sets off a social-media firestorm, there has been plenty for non-Catholics to criticize and for the faithful to feel anxious about.

We profess that Jesus made St. Peter the visible head of his Church on earth and that his successors throughout the ages are guided by the Holy Spirit to govern, teach, and sanctify it. How can we strengthen this belief in the papacy in the face of challenges (both outside the Church and within it) and so strengthen our faith in the One who instituted it?

In Pope Peter, Joe Heschmeyer says that papal flaws are an opportunity to understand what the papacy really means, not to abandon it (or the Church). Drawing deeply on the scriptural and historical witness, he offers a thorough but accessible defense of the papal office and an edifying picture of the extent—and limits—of its authority.

Jesus made Peter the Rock of the Church and promised that the gates of hell would not prevail against it. Pope Peter will confirm your faith in that promise and help you proclaim its truth to others.