Arcana Coelestia #3070
3070. 'And she says, Drink' means an affirmative response to the same. This is clear from the fact that it is a reply and a confirmation, consequently an affirmative response.
Silk
'Silk' signifies intermediate celestial good and truth. It means good because it is soft, and truth because it shines. Similar to 'fine linen,' it denotes genuine truth that shines from interior good. 'A thread of silk' signifies spiritual truths.
(References: Apocalypse Revealed 773)