Soncino on Yeshayahu 41:2
roused - viz. Cyrus. The Targum and Jewish commentators understand it of the patriarch Avraham, but this is less appropriate to the context.
from the east - Elam was northeast of Babylon.
righteousness - here with the sense of 'vindication of the right.'
called - shall meet him, or, 'shall call him wherever he goes.'