In Daniel 9:26, this signifies that divine truth shall be taken from the people, but will live again in a new church. (Apocalypse Explained 315[23])

In Genesis 17:14, this signifies eternal death. (Arcana Coelestia 2058)

In Exodus 23:23, this signifies that hell is removed solely through the protection of heaven by the Lord. (Arcana Coelestia 9316) To be cut off, as in Genesis 41:36, signifies to perish.

(References: Arcana Coelestia 5302, Genesis 41)

Like "say," the word "speak" refers to thoughts and feelings moving from our more internal spiritual levels to our more external ones -- and ultimately from the Lord, who is in a sense the most internal spiritual level of all. This is generally called "influx" and "perception" in the Writings, meaning they are thoughts and feelings that flow in in a complete way from the Lord, rather than being things we have to think about and figure out. On a number of occasions "speak" and "say" are used together; in these cases "speak" refers more to intellectual instruction in matters of thought and "say" refers more to feelings and affections that flow in directly.