3137. 'At the spring' means the enlightenment of them from Divine truth. This is clear from the meaning of 'a spring' as truth, dealt with in 2702, 3096, here Divine truth, as above in 3131. Because the Word is Divine truth it is therefore called 'a spring'. That 'standing at the spring' here embodies in the internal sense the enlightenment of things in the natural man follows from the train of thought; for where Divine truth is, enlightenment is there.

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])

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