7906. 'No yeast shall be found in your houses' means no falsity whatever shall come near good. This is clear from the meaning of 'yeast' as falsity, dealt with below; and from the meaning of 'house' as good, dealt with in 3652, 3720, 4982, 7833-7835. The meaning of 'yeast' as falsity becomes clear from the places where yeast and anything made with yeast, and also where unleavened and anything made without yeast are mentioned, such as in Matthew,

Jesus said, Look out for and beware of the yeast of the Pharisees and Sadducees. Then the disciples understood that He had not said that they should beware of the yeast used in bread, but of the teaching of the Pharisees and Sadducees. Matthew 16:6, 11.

Here 'yeast' plainly stands for false teaching. Because 'yeast' meant falsity it was forbidden to sacrifice the blood of the sacrifice with anything made with yeast, Exodus 23:18; 34:25. For 'the blood of the sacrifice' meant holy truth, thus truth pure and free from all falsity, 4735, 6978, 7317, 7326, 7846, 7850. It was also laid down that the minchah offered on the altar should not be baked with yeast in it, Leviticus 6:15-17, and that cakes and wafers also should be made without yeast, Leviticus 7:11-13.

[2] To go further with what 'made with yeast' and 'not made with yeast' refer to, it should be recognized that the purification of truth from falsity cannot ever come about in a person without so called fermentation, that is, without the conflict of falsity with truth and of truth with falsity. But after the conflict has taken place and truth has triumphed, the falsity falls away like dregs and the truth emerges purified. It is like wine that becomes clear after fermentation as the dregs sink to the bottom. That fermentation or conflict takes place especially when a person's state undergoes a change, that is to say, when his actions begin to spring from the good of charity, and not as previously from the truth of faith. For a person's state is not yet made pure while his actions spring from the truth of faith, but they have been made pure when they spring from the good of charity, since they now spring from his will. Previously they sprang merely from his understanding.

[3] Spiritual conflicts or temptations are fermentations in the spiritual sense, for during them falsities wish to link themselves to truths, but the truths reject them, eventually sending them to the bottom so to speak and in that way becoming refined. This is the sense in which to understand what the Lord teaches about 'yeast' in Matthew,

The kingdom of heaven is like yeast, which a woman took and hid in three measures of flour, until the whole was fermented by it. Matthew 13:33.

'Flour' is truth from which good is derived. Also in Hosea,

They are all committing adultery, like an oven heated by a baker; the raiser ¹ ceases from kneading the dough until it has fermented. Hosea 7:4.

Since such conflicts, meant by 'fermentations', take place with a person in the state before he attains newness of life, as has been stated, it was also laid down that the new minchah, the bread of the wave-offering, that was to be brought at the feast of first fruits, should be baked with yeast; and that was to be the first fruits to Jehovah, Leviticus 23:16-17.

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3720. 'This is nothing other than the house of God' means the Lord's kingdom as it exists in the ultimate degree of order. This is clear from the meaning of 'the house of God'. In the Word 'the house of God' is referred to in many places, and in the external sense, that is, literally, it means a building where holy worship takes place. But in the internal sense it means the Church, in the more universal sense it means heaven, and in the most universal the Lord's kingdom. In the highest sense however it means the Lord Himself as regards the Divine Human. But in the Word sometimes the expression 'House of God' is used and sometimes 'Temple'. The two are similar in meaning, the difference being that the expression 'House of God' is used when the subject is good but 'temple' when the subject is truth. From this it is evident that 'the House of God' means the Lord's celestial Church, and in the more universal sense the heaven of celestial angels, in the most universal the Lord's celestial kingdom, and in the highest sense the Lord as regards Divine Good; whereas 'the Temple' means the Lord's spiritual Church, and in the more universal sense the heaven of spiritual angels, in the most universal the Lord's spiritual kingdom, and in the highest the Lord as regards Divine Truth, see 2048. The reason why 'the House of God' means that which is celestial and the dwelling-place of good, while 'the Temple' means that which is spiritual and the dwelling-place of truth, is that 'a house' in the Word means good, see 710, 2233, 2559, 3128, 3652, and among the most ancient people used to be built of pieces of wood for the reason that 'wood' meant good, 643, 1110, 2784, 2812, whereas 'the Temple' means truth because it was built of stones - 'stones' meaning truths, see 643, 1296, 1298.

[2] These meanings that 'pieces of wood' and 'stones' possess are clear not only from the Word where they are mentioned but also from representatives in the next life. For people who assume that merit lies in good works seem to themselves to be cutting wood, and those who assume that it lies in truths, that is to say, people who have believed that they knew more truths than anybody else and yet have lived wickedly, seem to themselves to be breaking up stones. I have often seen such people wood-cutting or stone-breaking, from which the meaning of 'wood' and of 'stone' was made clear to me - that good is meant by 'wood' and truth by 'stone'. It has in like manner been made clear to me from the fact that when I have seen a wooden house the concept of good has instantly presented itself, and when I have seen a stone house the concept of truth has done so. And I have also learned from angels about this matter. This is why, when in the Word 'the House of God' is mentioned, the concept of good presents itself to angels, the kind of good depending on the nature of the subject that is being dealt with. And when 'the Temple' is mentioned, the concept of truth presents itself, the kind of truth depending on the subject that is being dealt with. From this one may also deduce how deeply and inwardly concealed the heavenly arcana lie in the Word.

[3] The reason 'the House of God' here means the Lord's kingdom as it exists in the ultimate degree of order is that the subject is Jacob who, as often shown already, represents the Lord's Divine Natural. The natural exists in the ultimate degree of order, for the natural encompasses all interior degrees and includes them all together within itself. And since they are included all together within the natural, and so countless things are beheld as a single whole, obscurity exists there compared with other degrees. This obscurity too has been dealt with frequently.