Isaiah 37:25

I have digged, and drunk water; and with the sole of my feet have I dried up all the rivers of the besieged places.

Cross-reference

2 Kings 19:24 contains the identical boast of digging wells and drying up rivers — the direct parallel narrative.

2 Chronicles 32:1 describes Sennacherib's invasion of Judah — the historical context for this boastful claim.

Deuteronomy 20:1 commands Israel not to fear enemy armies — contrasting with the arrogant boasting of this Assyrian ruler.