Arcana Coelestia # 10539
10539. 'Were I for one moment to go up in your midst I would consume you' means that they would be destroyed if what is Divine were to flow in and reside with them. This is clear from what has been shown above in 10531-10533, where also similar words occur.
Say
As with many common verbs, the meaning of “to say” in the Bible is highly dependent on context. Who is speaking? Who is hearing? What is it about? Is it a command, a message, an apology, instruction? All these things enter into the meaning of “say.” In general, though, “saying” has to do with sharing truth at various levels -- from the most exalted power people can have to perceive the Lord's desires directly to the most basic of orders issued to people at their lowest.