The Parable M.I Abaga

[Parable: Child]
There was once a lion, all alone in its cage
Where no one could enter, for none was that brave
But all of a sudden, in wandered a mouse
The lion said, "who dares to enter my house?"
The mouse said "I beg you spare me today."
The lion said "mercy I grant you, be on your way"
All who saw the mouse come from the cave with pride
Wondered if there was ever only a mouse inside