But as his warnings had been disregarded, he issued a document after the emperor's retreat from Brescia, teeming with complaints against Frederick, and followed it up by an open alliance with the Lombards, and by the excommunication of the emperor on the 10th of March 1239.
We observe, again, the value that Plutarch attaches, not merely to the sustainment and consolation of rational religion, but to the supernatural communications vouchsafed by the divinity to certain human beings in dreams, through oracles, or by special warnings, like those of the genius of Socrates.
But for some years before, as well as after, the outbreak of the World War, he uttered frequent warnings against the " German Menace."
Warnings of the danger of the routes to southern Syria turned him from his purpose; and his friend and fellow-pilgrim, Rabban Marcos, becoming Nestorian patriarch (as Mar Yaballaha III.) in 1281, suggested Bar Sauma's name to Arghun Khan, sovereign of the Ilkhanate or Mongol-Persian realm, for a European embassy, then contemplated.
He had several warnings, but either through over-confidence or weariness of life he scorned to fly.