Judith 7:9

9 Wherefore that thou mayst overcome them without joining battle, set guards at the springs that they may not draw water out of them, and thou shalt destroy them without sword, or at least being wearied out they will yield up their city, which they suppose, because it is situate in the mountains, to be impregnable.

Judith 7:9 In-Context

7 Nevertheless there were springs not far from the walls, out of which they were seen secretly to draw water, to refresh themselves a little rather than to drink their fill.

8 But the children of Ammon and Moab came to Holofernes, saying: The children of Israel trust not in their spears, nor in their arrows, but the mountains are their defense, and the steep hires and precipices guard them.

9 Wherefore that thou mayst overcome them without joining battle, set guards at the springs that they may not draw water out of them, and thou shalt destroy them without sword, or at least being wearied out they will yield up their city, which they suppose, because it is situate in the mountains, to be impregnable.

10 And these words pleased Holofernes, and his officers, and he placed all round about a hundred men at every spring.

11 And when they had kept this watch for full twenty days, the cisterns, and the reserve of waters failed among all the inhabitants of Bethulia, so that there was not within the city, enough to satisfy them, no not for one day, for water was daily given out to the people by measure.