Arcana Coelestia#7589
7589. 'I have sinned this time' means a separation from truth and good. This is clear from the meaning of 'sinning' as a cutting off and turning away from what is Divine, thus from truth and good, dealt with in 5229, 5474, 5841, consequently a separation also; for anyone who turns away from truth and good separates himself from them.
Arcana Coelestia#5474
5474. 'Do not sin against the boy' means lest they become separated - the external from the internal. This is clear from the meaning of 'sinning' as a separation, dealt with in 5229, for all sin leads to separation; and from the representation of Joseph, to whom 'the boy' refers here, as the internal, as above in 5469.