Arcana Coelestia #532
532. Verses 30, 31 And Lamech lived after he beget Noah five hundred and ninety-five years; and he beget sons and daughters. And all the days of Lamech were seven hundred and seventy-seven years; and he died.
As has been stated, 'Lamech' means a vastated Church. 'Sons and daughters' means conceptions and births of such a Church.
Genesis 5:30
30
Lamech lived after he became the father of Noah five hundred ninety-five years, and became the father of sons and daughters.