I love this song and have been listening to this song a lot lately. I believe that it has a spiritual theme and that they are singing from God's perspective because of the verse:
I hear the tender words from Zion,
I hear Noah's waterfall,
Hear the gentle lamb of Judah,
Sleeping at the feet of Buddha,
And the prophets from Elijah,
To the old Payute Lavatka,
Take their places at the table when they're called,"