Judith 6:9

9 And if thou persuade thyself in thy mind that they shall be taken, let not thy countenance fall: I have spoken it, and none of my words shall be in vain.

Judith 6:9 In-Context

7 Now therefore my servants shall bring thee back into the hill country, and shall set thee in one of the cities of the passages:
8 And thou shalt not perish, till thou be destroyed with them.
9 And if thou persuade thyself in thy mind that they shall be taken, let not thy countenance fall: I have spoken it, and none of my words shall be in vain.
10 Then Holofernes commanded his servants, that waited in his tent, to take Achior, and bring him to Bethulia, and deliver him into the hands of the children of Israel.
11 So his servants took him, and brought him out of the camp into the plain, and they went from the midst of the plain into the hill country, and came unto the fountains that were under Bethulia.

The Brenton translation of the Septuagint is in the public domain.