7781. 'And all the firstborn of the beasts' means adulterated forms of the good of faith. This is clear from the meaning of 'the firstborn' as faith; and from the meaning of 'beast' as affections for good, and in the contrary sense affections for evil, dealt with in 45, 46, 141, 143, 246, 714, 715, 719, 776, 2179, 2180, 3519, 4724, 5198. Such things come to be meant by 'beasts' from representatives in the next life, 3218; and for that reason also such things were meant by the ones used in sacrifices, 2180, 2805, 2807, 2870, 3519. And because 'beasts' meant these things 'the firstborn of the beasts' therefore means the good of truth, at this point when it had been adulterated since it was with the Egyptians, who perverted all truths and forms of good by applying them to evil purposes.

719. 'The beast that is not clean' means evil affections. This is clear from what has been stated and shown already about clean beasts. The clean ones are so called because they are gentle, good, and useful. Those that are not clean are the opposite - savage, evil, and useless - of which there are genera and species. These in the Word are also portrayed as wolves, bears, foxes, pigs, and many others, which mean various evil desires and malicious intentions. In the present verse it is said that unclean beasts, or evil affections, were to be taken into the ark as well, for the following reason: The character of the member of this Church is being described here, specifically by means of the ark, and thus by the things that were in or rather had been brought into the ark, that is, the things that already resided with man prior to his being regenerated. Truths and goods resided with him already, which the Lord had supplied and granted prior to his regeneration, for without truths and goods no one can possibly be regenerated. Here the evils that resided with him are referred to and are meant by 'unclean beasts' that are mentioned. While a person is being regenerated evils are present that have to be dispersed, that is, broken down and modified by means of goods. For no evil with man, that of his own doing or that which is hereditary, can ever be dispersed so far as to be banished, but remains implanted for ever. Yet it is broken down and modified by means of goods from the Lord so as to be innocuous and not seen. This is an arcanum that is still unknown. It is the evils of man's own doing that are broken down and modified, rather than those which are hereditary - something else which is not known.