Nahum 3:14

Draw thee waters for the siege, fortify thy strong holds: go into clay, and tread the morter, make strong the brickkiln.

Draw thee waters for the siege, fortify thy strong holds - ironical exhortation to Nineveh to defend herself.

Draw thee waters - so as not to be without water for drinking, in the event of being cut off by the besiegers from thy fountains.

Go into clay, and tread the mortar, make strong the brick-kiln - "make strong," or 'repair' (Maurer); so as to have a supply of bricks formed of kiln-burned clay, to repair breaches in the ramparts, or to build new fortifications inside when the outer ones are taken by the foe.