In Isaiah 29:9, the phrase 'to be drunken without wine' points to people who don't care about the Word or the truths of faith, and thus have no inclination to know any thing about faith. (Arcana Coelestia 1072[6])

(Referenties: Arcana Coelestia 1072 [1-6]; Isaiah 29)

745. In general 'bird' means thoughts. This is clear from what has been stated in several places already about birds meaning intellectual concepts or rational concepts. In those places however they are called 'birds of the air' ¹ whereas here it is simply 'bird', which is why thoughts in general are meant. Indeed there are many kinds of birds, clean and unclean, which in verse 14 below are differentiated as birds, flying creatures, and winged creatures. Clean ones are thoughts about truth, the unclean are false thoughts, which will in the Lord's Divine mercy be dealt with later on.

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