Arcana Coelestia#624
624. It is clear that a state which is not a state of the Church is the subject here from the fact that in this verse and those that follow in chapter the name God is used, whereas in previous verses it was Jehovah. When the Church does not exist the name God is used, but when it does exist, it is Jehovah; for example in Genesis 1, when the Church did not exist, He was called God, but in the next chapter when it did, He was called Jehovah God. 'Jehovah' is the holiest of names, and belongs to the Church alone. Not so 'God', for no nation was without gods. Consequently the same holiness was not attached to the name God. Nobody was allowed to utter the name Jehovah except him who had knowledge of the true faith; but anyone was allowed to utter the name God.
Arcana Coelestia#8058
8058. 'Seven days you shall eat unleavened bread' means purification from falsities. This is clear from the meaning of 'seven days' as that which implies something holy, dealt with in 395, 433, 716, 881, 5265, 5268, and as a complete state, 6508; and from the meaning of 'eating unleavened bread' as making truth one's own and as purification from falsity, for 'the unleavened' is good purified from falsity, and 'eating' making one's own, 3168, 3513, 3596, 3832, 4745. The reason why 'the unleavened' is good purified from falsity is that 'bread' means good and 'yeast' falsity.