An Unarmed Warrior (Isaiah 49:1-13)

The promised warrior is supposed to secure a life that never ends.  You would expect such a warrior to be well armed, and be dressed for battle in the most intimidating way.  This is what we want as humans to know that this warrior is an intimidating being.  The problem with this is it is not the picture that Isaiah casts for the redeeming warrior.  What kind of warrior will deliver and why is this the warrior that we need?