Complex sentence: The spirit responded that there were similar men in her lands perhaps referring to Buddhists in Sogdiana, however when Mar Ammo read from one of Mani's books she realized he was a bringer of the "true religion" and allowed him to pass.
Split into simpler sentences: The spirit responded that there were similar men in her lands perhaps referring to Buddhists in Sogdiana. However, when Mar Ammo read from one of Mani's books she realized he was a bringer of the "true religion" and allowed him to pass.