Arcana Coelestia # 3055
3055. 'Outside and away from the city' means removed from matters of doctrine. This is clear from the meaning of 'the city' as doctrine, dealt with in 402, 2449, from which it is evident that 'outside the city' means outside of, thus removed from, matters of doctrine.
3055a 'Near a well of water' means to receive the truths of faith. This is clear from the meaning of 'a well of water' as the Word, the source of the truth of faith, and also truth itself, dealt with in 2702. The phrase 'a well of water' is used in this verse, but 'a spring' in all that follows; and for the difference between the two in the internal sense - between 'a well of water' and 'a spring' see the paragraph just referred to.
Swear
In Genesis 21:23, this signifies affirmation.
The Lord swearing by himself signifies that divine truth testifies, for He is divine truth itself, and this testifies from itself and means itself. It says 'Jehovah swears' because the children of Israel had a representative church, and so the Lord's conjunction with the church was represented in a covenant similar to two people swearing their trust. This is why swearing was used to seal a covenant or deal. When 'Jehovah swears' it does not mean that He really did swear, but that divine truth testifies or bears testimony to the things asserted.
(Odkazy: Apocalypse Revealed 474)