God's intention is that the inhabitants of the village will repopulate the earth after the imminent flood, and he wants them to get a headstart on it now, so he creates a magically seductive night in which love is in the air (along with a full moon and lots of stars), a...
Night for Not Sleeping
Don Silvestro must sing a seductive song to encourage the lovemaking in which he cannot participate. Clementina, too, spends the night alone.