Lactantius, De Mortibus Persecutorum

tum quidam ministrorum scientes dominum cum adsisterent immolanti, imposuerunt frontibus suis inmortale signum: quo facto fugatis daemonibus sacra turbata sunt. trepidabant aruspices nec solitas in extis notas uidebant et quasi non litassent, saepius immolabant.

Then certain of his attendants, who knew the Lord, as they stood by him while he sacrificed, set the immortal sign on their foreheads; when this was done, the demons were put to flight and the rites were thrown into confusion. The haruspices were alarmed and could not see the usual marks in the entrails, and, as though they had not obtained a favourable result, they sacrificed again and again.