Arcana Coelestia #9808
9808. 'From the midst of the children of Israel' means in heaven and in the Church. This is clear from the meaning of 'Israel' as those who belong to the Church, thus in the abstract sense the Church itself, dealt with in 4286, 6426, 6637, 6862, 6868, 7035, 7062, 7198, 7201, 7215, 7223, 8805, 9340. And since 'Israel' means the Church it also means heaven; for heaven and the Church make one, and also the Church is the Lord's heaven on earth. Every member of the Church furthermore has heaven within himself when truth and at the same time good which come from the Lord reside in him.
Arcana Coelestia #533
533. Since nothing further is mentioned about Lamech apart from the fact that be beget sons and daughters, who are the conceptions and births of such a Church, there is no need to pause any longer over him. What these births, or sons and daughters, were, becomes clear from the Church, for the character of a Church determines that of its offspring. Both those Churches called Methuselah and Lamech breathed their last just before the flood.