486. Verse 4 And the days of Man after he beget Seth were eight hundred years; and he beget sons and daughters.

'Days' means periods of time and states in general. 'Years' means periods of time and states in particular. 'Sons and daughters' means the truths and goods that they perceived.

4780. 'And mourned over his son many days' means a state, namely one of mourning for lost good and truth. This is clear from the representation of Joseph, to whom 'son' refers here, as Divine Truth, specifically the truths spoken of above in 4776; and from the meaning of 'days' as states, dealt with in 23, 487, 488, 493, 893, 2788, 3785, in this case a state of great mourning since the expression 'many days' is used.