Un fructífero significa el bien espiritual, que es el bien de la caridad.

(Referencias: Apocalipsis Explicado 357)

And God saw everything that He had made, and indeed it was very good. (Genesis 1:31).

1. All order is from the Lord.

2. It exists in all of creation, spiritual and natural.

3. Disorder is the perversion of order, and it exists in hell and in the world.

4. Order is a matter of essence, having to do with love and wisdom, and of form.