'Fortifications' in the Bible

One who scatters is coming up against you.Man the fortifications!Watch the road!Brace yourself!Summon all your strength!

All your fortifications are fig trees with ripe fruit—When shaken, they fall into the eater’s mouth.

Draw for yourself water for the siege!Strengthen your fortifications!Go into the clay and tread the mortar!Take hold of the brick mold!