Now we have to ask how the bliss of Devachan comes about. Most of the activity there is creative, and though it is difficult to give an idea of the bliss that goes with it, a comparison with something that occurs on Earth will perhaps bring us nearer to it.
Let us observe the feeling that pervades the activity of a being engaged in the creation of another being: for instance, a hen sitting on her eggs. This is really a very appropriate comparison, grotesque though it may sound, for the brooding hen experiences an immense and blissful sense of well-being. Transfer this feeling to the spiritual level and you will have some conception of Devachan.
Source: Rudolf Steiner – GA 95 – At the Gates of Spiritual Science: LECTURE FIVE: HUMAN TASKS IN THE HIGHER WORLDS – Stuttgart, 26 augustus 1906
Revised translation by E.H. Goddard and Charles Davy