Arcana Coelestia #3799
3799. 'And watered the flock of Laban his mother's brother' means instruction. This is clear from the meaning of 'watering the flock' as instruction, dealt with in 3772. The reason why here Laban for the third time is called 'his mother's brother' is to point out the flock's origin and Rachel's origin, that is, the origin of doctrine and of the affection for interior truth.
Arcana Coelestia #3772
3772. 'And water the flock' means that the doctrine was drawn from it. This is clear from the meaning of 'watering', or giving a drink, as giving instruction, dealt with in 3069, 3768, and from the meaning of 'the flock' as people who are governed by the goods and truths of faith, dealt with in 343, 3767. Thus 'watering it' means giving instruction from the Word, and therefore from doctrine.