Arcana Coelestia #481
481. Verse 7 And Man lived a hundred and thirty years. And he beget in his own likeness, according to his own image, and called his name Seth.
'A hundred and thirty years' means the period of time prior to the rise of a new Church which, being little different from the Most Ancient Church, is said to have been 'born in his likeness, and according to his image.' 'Likeness' however has regard to faith and 'image' to love. This Church was called Seth.
Seed
'A seed' signifies the ultimate and primary levels in a person. It also signifies good and truth from the Lord. In an opposite sense, it signifies falsity of doctrine and hellish falsity. 'A seed' signifies everyone who constitutes the Lord's spiritual kingdom and faith grounded in charity.
In Genesis 12:7, 8:15, 16, 'a seed' signifies love and everyone who has love.
(References: Arcana Coelestia 1025)