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.

1105. That these things are meant is quite clear from what has been stated already about numbers and years, see 482, 487, 488, 493, 575, 647, 648.