Valesius (on Euseb. H. E., iv. 7) states that the magi had two kinds of familiars: the first, who were sent to inspire men with dreams which might give them intimations of things future; and the second, who were sent to watch over men, and protect them from diseases and misfortunes. The first, he says, they called (as here) ὀνειροπομπούς, and the second παρέδρους.