737. 'Noah was a son of six hundred years' means his initial state of temptation. This is clear from the fact from here down to Eber in Chapter 11 nothing else is meant by numbers, years of age, or names than real things, as was the case also with the ages and names of all those mentioned in Chapter 5. Here 'six hundred years' means the initial state of temptation. This becomes clear from its prime factors which are ten and six multiplied again by ten. When the same factors are involved it makes no difference whether the number arrived at is large or small. As for ten, this has been shown already at 6:3 to mean remnants, while the meaning of six here as labour and conflict is clear from places throughout the Word. For the situation is this: What has gone before dealt with man's preparation for temptation, that is to say, he was supplied by the Lord with truths of the understanding and with goods of the will. These truths and goods are remnants, but they are not brought forth so as to be acknowledged until man is being regenerated. In the case of those who are being regenerated by means of temptations the remnants existing with any man are for the angels present with him. From these remnants they draw out those things with which they protect him against the evil spirits who activate falsities with him and in this way attack him. It is because remnants are meant by 'ten' and conflict by 'six' that six hundred years are spoken of, a number in which ten and six are the prime factors and which means a state of temptation.

[2] As regards conflict being the particular meaning of 'six', this is clear from Genesis 1, which describes the six days of man's regeneration prior to his becoming celestial. During those six days there was constant conflict, but on the seventh day came rest. Consequently there are six days of labour, and the seventh is the sabbath, a word which means rest. This also is why a Hebrew slave was to serve for six years and in the seventh was to go free, Exodus 21:2; Deuteronomy 15:12; Jeremiah 34:14, and why for six years they were to sow the land and gather in the produce, but in the seventh they were to leave it alone, Exodus 23:10-12. The same applied to a vineyard. It is also the reason why in the seventh year the land was to have a sabbath of rest, a sabbath to Jehovah, Leviticus 25:3-4. Because 'six' means labour and conflict it also means the dispersion of falsity, as in Ezekiel,

Behold, six men coming from the direction of the upper gate, which looks towards the north, every man with a weapon of dispersion in his hand. Ezekiel 9:2.

And in the same prophet, against Gog,

I will cause you to turn about, and I will split you into six, and cause you to come up from the uttermost parts of the north. Ezekiel 39:2.

Here 'six' and 'splitting into six' stand for dispersion, 'the north' for falsities, and 'Gog' for people who seize on doctrinal matters based on things of an external nature with which they destroy internal worship. From Job,

He will deliver you in six troubles, and in a seventh no evil will touch you. Job 5:19.

This stands for the conflict that constitutes temptations.

[3] 'Six' occurs in other parts of the Word where it does not mean labour, conflict, or the dispersion of falsity, but the holiness of faith. In these instances it is related to twelve, which means faith and all things of faith in their entirety, and to three which means that which is holy. Consequently there is also a genuine derivative meaning to the number six, as in Ezekiel 40:5, where the man's measuring rod with which he measured the holy city of Israel was six cubits long; and in other places. The reason for this derivative is that in the conflict of temptation the holiness of faith is present, and also that six days of labour and conflict look forward to the holy seventh day.

715. Having seven heads.- That this signifies the knowledge (scientia) of the holy things of the Word, which they have adulterated, and consequent insanity, but yet craftiness, is evident from the signification of head, as denoting intelligence and wisdom, and in the opposite sense insanity and folly, (concerning which see above, n. 553, 577, and that it also denotes craftiness, n. 577); and from the signification of seven, which denotes all men and all things, and is said of that which is holy (concerning which see above, n. 257), in this case therefore, of the holy things of the Word, which they have adulterated. As seven is used in reference to holy things, it is also, in the opposite sense, used in reference to those things when adulterated and profaned; for in the Word every expression has also an opposite sense, and the opposite of what is holy is what is profane. It is clear from these things that the seven heads, which the dragon was seen to have, do not mean heads, or seven, but the knowledge (scientia) of the holy things of the Word, which they have adulterated, and, consequent insanity, but yet craftiness.

[2] Insanity is signified by the head of the dragon, because the intelligence of the man of the church is from genuine truths from the Word. The truly human understanding is formed and perfected by means of natural, civil, moral, and spiritual truths, the interior understanding by means of spiritual truths, but the exterior by means of moral and civil truths; such therefore as the truths are, such is the understanding that is formed from them. All spiritual truths are from the Word, and make one with the good of love and of charity. When therefore a man places everything of the church and of heaven in faith, and separates the good of charity and of love from that faith, as those do who form the head of the dragon, as stated in the preceding article, then the interior understanding cannot be formed, consequently, instead of intelligence in spiritual things, they have insanity. For from a false principle falsities flow forth in a continual series, and, in consequence of the separation of the good of charity, they cannot possibly have any genuine truth, since all truth is of good, and in fact, is good in form. From this it is clear that the head of the dragon signifies insanity in spiritual things.

[3] The head of the dragon also signifies craftiness, because all those who form its head are merely natural and sensual, and if such have at the same time studied the Word and the doctrine of the church, and have seized upon falsities instead of truths, and have also confirmed these by knowledges (scientifice), they are crafty above all others. But this craftiness is not so manifest in the world as it is afterwards when they become spirits; for in the world they cover over their craftiness with external piety and feigned morality, which conceal it from view, but as the craftiness is in their spirit, it is plainly manifest when externals are removed, as is the case in the spiritual world. But it must be understood that the craftiness which is signified by the head of the dragon is craftiness in perverting the truths and goods of the Word by reasonings from fallacies and sophistries, also from persuasive things, by means of which the understanding is fascinated, thus by giving to falsities the appearance of truths. That this is the case is also evident from the serpent by which the first parents were seduced, which is said, "to have been more crafty than any wild beast of the field" (Genesis 3:1); for the signification of that serpent is similar to that of the dragon. Therefore the latter is also called "the old serpent that seduceth the whole world," in the ninth verse of this chapter.