Luckily, a mass took place in one of the churches just as I passed it, and it proved a photogenic event. It was also a very interesting experience as all these priests (some of them very young) played on instruments and chanted songs in Amharic.
And more priests. I think the one on the first picture was getting ready for some kind of festival or celebration. Maybe he prepared for Timkat (or Epiphany in English), which is a very important festival in Ethiopia. The one on the second picture seems to be reading in the Bible as many other priests did in Lalibela.
Also inside Bet Giyorgis. Notice that it’s Virgin Mary (or Maryam as she’s called in Ethiopia) on the picture. Virgin Mary plays a very important role in the Ethiopian-Orthodox church and a lot of their religious festivals are dedicated to her.