Yeah. Possibly all the interpretations are correct simultaneously.

I think its bigger than liberation from desire. That definitely reminds me of Buddhist teachings, though. Desire being the cause of suffering. But I'm not sure liberation from suffering is the same goal as following Christ. Maybe a nice side effect.

99% of what I possess isn't material. I can lose all of my material things and still be "me." I can lose all of my relationships and still be me. But can I lose all of my knowledge and still be me? My opinions could all change, because they'd be based on different suppositions. But then, an opinion is a judgement. If I gave away all the immaterial things I possess, what would I be? Maybe poor in spirit.