Isaiah 37:25

I have digged … water I (again emphatic) dig and drink foreign waters. The word "foreign" is to be supplied from 2 Kings 19:24. For the expression cf. Proverbs 9:17; Proverbs 5:15.

all the rivers of the besiegedplaces] Render with R.V. all the rivers (lit. "Nile-streams") of Egypt. See on ch. Isaiah 19:6. The extravagant hyperbole covers an empty boast; no Assyrian army had ever yet set foot in Egypt, and Sennacherib was not destined to see his dream fulfilled.