"A singing bird in an open cage ......Who will only fly......... only fly for freedom"

this lyric from U2's WALK ON (album All you can't leave behind)

has absolutely been gnawing at me.... I'm not sure of the original meaning for U2... but for me it has become a tantalizing picture of the struggle with sin.... the temptation to "settle for sin".... the allure of thinking of anything as beautiful or healthy that is prohibited by my all-knowing and wise Father....
and so... day by day... hour by hour... minute by tick-tick minute we refuse the "freedom" to fly around in a house .... because we will wait until there is true freedom... the opportunity to fly around outdoors.... yet we wait with hope!!! the bird is SINGING!

then again, what do i know?