4670. 'A son of seventeen years' means His state. This is clear from the ages measured in years of people mentioned in the Word - spiritual realities and states are meant by them, as these are by all other numbers. For all numbers in the Word have spiritual realities and states as their meaning, see 575, 647, 648, 1988, 2075, 2252, 3252, 4264, 4495, as also do years, 487, 488, 493, 893.

[2] It does indeed seem as though numbers of years, or ages measured in years, mean nothing else than numbers of years. This is because these numbers more than any others have so to speak a more specific historical application. But these numbers too include spiritual realities and states within them, as is clear from the applications given at Genesis 5 and from what has been stated at Genesis 17:1 and Genesis 25:7 about Abraham's age and at Genesis 35:28 about Isaac's. The same is clear in addition from the fact that no historical detail exists anywhere in the Word which does not include within it something heavenly into which it is also changed when it passes from the thought of the reader to the angels present with him, and through those angels into heaven where the spiritual sense rises up out of every historical reference in the Word.

[3] But what is meant by Joseph's being seventeen years old may be seen from the meaning which this number has elsewhere, namely a beginning, in this case the beginning of the representation through Joseph. As to its meaning a beginning and that which is new, see 755, 853. What is more, this number includes within itself in a general way, and so to speak potentially, all the things that are represented by 'Joseph' - 'seven' meaning that which is holy and 'ten' remnants. For 'seven' when used in the Word adds holiness to any meaning, see 881, while 'ten' means remnants, 576, 1906, 2284. The remnants present in the Lord were Divine and His own, and by means of them He united the Human Essence to the Divine Essence, 1906.

395. 'Anyone killing Cain, vengeance will be taken on him sevenfold' means that to violate faith thus separated was utterly forbidden. This is clear from the meaning of 'Cain' as separated faith, and from the meaning of 'seven' as utterly inviolable. As is well known, the number seven was considered holy on account of the six days of creation and of the seventh, which is the celestial man in whom peace, rest, and the Sabbath exist. This is the reason why the number seven occurs so many times in the religious ceremonies of the Jewish Church, in every instance standing for that which is holy. It is also the reason why periods of time, long as well as short, were divided into seven, and were called weeks, as in the case of the long time intervals leading up to the time when the Messiah was to come, Daniel 9:24-25. A period of seven years is also called a week by Laban and Jacob, Genesis 29:27-28. Consequently wherever the number seven occurs it stands either for something holy or else for something utterly inviolable, as in David,

Seven times in the day I praise You. Psalms 119:164.

In Isaiah,

The light of the moon will be as the light of the sun, and the light of the sun will be sevenfold, as the light of seven days. Isaiah 30:26.

Here 'the sun' is love, and 'the moon' faith deriving from love, a faith which is to be as love.

[2] Just as the periods of man's regeneration divide into six before he reaches the seventh, which is the celestial man, so also do the periods of vastation even until nothing celestial is left. This was represented by the many captivities of the Jews, and by the last of them, the Babylonian, which was a captivity of seven decades, that is, seventy years. And it was several times stated that the land had to rest during its Sabbaths. It was also represented by Nebuchadnezzar, of whom it is said in Daniel,

His heart will be changed from man, and the heart of a beast given him until seven times will pass over him. Daniel 4:16, 25, 32.

In reference to the vastation of the last times it is recorded in John,

I saw another sign in heaven, great and wonderful - seven angels holding the seven Revelation 15:1, 6-7.

They will trample over the holy city for forty-two months (that is, six times seven). Revelation 11:2.

In the same book,

I saw a book [written] within and on the back, sealed with seven seals. Revelation 5:1.

Severe and increased penalties were for the same reason expressed by the number seven, as in Moses,

If you will not obey Me in this matter, I will chastise you seven times worse for your sins. Leviticus 26:18, 21, 24, 28.

In David,

Return to our neighbours sevenfold into their bosom. Psalms 79:12.

So then, it is because it was utterly forbidden to violate faith - since it had a use to serve, as has been stated - that the statement is made about 'vengeance being taken sevenfold on him who killed Cain'.