Arcana Coelestia #1020
1020. That these things are meant becomes clear from the fact that everything put together as history from Genesis 1 down to Eber in Chapter 11 means something different from what appears in the letter, and from the consideration that the historical narratives there are purely made-up history customary among the most ancient people. When attesting the truth of some matter they would say that 'Jehovah said it'. Here however 'God' is used because the subject is the spiritual Church. And they did the same when anything true was being, or had been, put into effect.
Upright
Being 'Upright' signifies truth that originates in charity. Truth may be derived from various origins, but the truth that has its origin in the good of charity from the Lord is called 'upright,' and 'an upright man,' as in Psalms 15:1-2, 18:25, and 84:11
(References: Arcana Coelestia 612; Psalms 84:11)