What if a visit to the place Jesus called where Satan's throne is ended with a rainbow?

In this GPS episode, in our In the Margins series, we almost didn't make it to Pergamum at all. You may remember that the reason we pivoted our day was because storms had rolled into Pergamum that morning. By the time we arrived, the storms had passed. And at the end of that day, a rainbow showed over the acropolis.

Before we get to the rainbow, let's talk about marble. Many of these ancient cities are paved with it. Though it's beautiful, it's also extraordinarily slippery on a steep hillside. Pergamum sits on a dramatic acropolis, so the ground is constantly sloping. The edges of those ancient slabs catch you off guard. Grippy soles. No pride about holding onto someone's arm.

Pergamum—modern-day Bergama, Turkey—was one of the wealt ...