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.

'Sarah,' as a mother, represents divine truth. She also denotes truth joined to good and divine truth. 'Sarah,' as a wife, in Genesis 18:6, signifies rational truth pertaining to the Lord. As a sister, she denotes the rational principle. Sarai was called 'Sarah' so she would represent the divine intellectual principle by adding the 'H' from the name of Jehovah. 'Thou shalt not call her name Sarai, but Sarah shall her name be,' signifies that the Lord shall put off His humanity, and put on the divinity.

(Odkazy: Arcana Coelestia 1468)