In Daniel 10:6, this signifies the exteriors of the Word, or its literal sense. (Arcana Coelestia 2162[4])

In Deuteronomy 33:27, this signifies divine truths with man: The truths of the literal sense in which is the very strength of divine truth. (Apocalypse Explained 594[5])

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.