Posts of the door
In Exodus 12:7, this signifies the truths of the natural. (Arcana Coelestia 7847) Lintel and post signify the goods and truths through which there is introduction to spiritual things.
Arcana Coelestia # 5603
5603. 'And Judah said to Israel his father' means a perception received from the good of the Church regarding these matters. This is clear from the meaning of 'saying' in the historical narratives of the Word as perceiving, often dealt with already; from the representation of 'Judah' as the good of the Church, dealt with above in 5583; and from the representation of 'Israel' as the internal spiritual Church, dealt with in 3305, 4286. From this it is evident that 'Judah said to Israel his father' means a perception the Church had which it received from its own good.