en_tn/2ki/20/19.md

For he thought

"Because Hezekiah thought"

Will there not be peace and stability in my days?

"There will be peace and stability in my days." (See: rc://en/ta/man/translate/figs-litotes) Hezekiah asks the question to show that he has nothing to worry about. (See: rc://en/ta/man/translate/figs-rquestion)

pool

A small area of still water for storage

conduit

A tunnel for carrying the water

are they not written in The Book of the Events of the Kings of Judah?

"yes, they are written in The Book of the Kings of Judah." The writer asks the question to emphasize that they are written. (See: rc://en/ta/man/translate/figs-rquestion)