I have been a course, I have been an eagle.
I have been a coracle in the seas:
I have been compliant in the banquet.
I have been a drop in a shower;
I have been a sword in the grasp of the hand
I have been a shield in battle.
I have been a string in a harp,
Disguised for nine years,
in water, in foam.
I have been sponge in the fire,
I have been wood in the covert

Book of Taliesin (c. 1275?) - The Battle of the Trees