To be fruitful relates to goodnesses, and to be multiplied, truths.

(Посилання: Arcana Coelestia 1014, 1018)

1018. The reason why the statement found in verse 1 of this chapter 'be fruitful and multiply' is repeated here is that the conclusion is reached at this point. This statement means that everything will go well and will bear fruit and multiply if people refrain from what is meant by 'eating blood' and by 'shedding blood', that is to say, if they do not destroy charity by acts of hatred and profanation.