Book 5
We are told Athena infuses Diomedes with strength and bravery.
Consider:
“He swept across the wide plain like a winter torrent
whose rushing water has bursts its embankments; the thick-built
dikes cannot hold it back, nor can it be halted
by the walls of the flourishing vineyards, when heavy rains
suddenly make it spill over, and farmers watch
as their beautiful fields of grain are destroyed beneath it;”
(5.82-87)