In the Footsteps of Jesus also gives Stourton the chance to indulge in some serious “puff-pant” documentary. You don’t know the genre? Yes you do, it’s when the presenter gives you a sense of where he is by saying: “And here we are (puff), near the top (pant) of” wherever. It works best on radio — David Attenborough has been known to use the same technique on television, but that’s because he really is knackered.

To be honest, the on-site elements of the first episode are pretty unnecessary: did Stourton really have to visit the place where the Dead Sea Scrolls were found to be able to talk about them? And his investigations are set to take him as far as India — where does in situ investigation stop and working holiday take over? Still, let us not be too hard on Stourton; after all, he seems to have got just as much top information in the studio.

His mission — to build a picture of the man that Jesus Christ might have been from the world he knew — is an intriguing one for the listener, regardless of faith. What is extraordinary, in fact, is how often the archaeologists and historians he speaks to have had their own faith reinforced by their research. And there are wonderful little insights to save up for the watercooler, such as the one about Jesus choosing to reveal that He was the Son of God in the very spot where a dirty great temple appointing Augustus Caesar to the gig had been built.

And Stourton is not afraid to meander off down sidepaths when the journey looks interesting. Few of us will have lifted up the rock under which reside the Nazi pastors of Germany at the end of the 1920s, for example. Faced with the Jewishness of Jesus, they unearthed the theory that, coming from Galilee, He must have been Aryan because Aryans had invaded Galilee, and so, well, er, there you go, QED, Heil Hitler, etc. Yes, you are right, it’s good stuff. Try not to miss it.

In the Footsteps of Jesus, Monday, Radio 4, 8pm

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