The Bowman and Lion

A VERY SKILLFUL BOWMAN went to the mountains in search of game, but all the beasts of the forest fled at his approach. The Lion
alone challenged him to combat. The Bowman immediately shot out
an arrow and said to the Lion: "I send thee my messenger, that
from him thou mayest learn what I myself shall be when I assail
thee." The wounded Lion rushed away in great fear, and when a Fox
who had seen it all happen told him to be of good courage and not
to back off at the first attack he replied: "You counsel me in
vain; for if he sends so fearful a messenger, how shall I abide
the attack of the man himself?' Be on guard against men who can strike from a distance. - Aesop

[courtesy of Aesopfables.com]