Isaiah 30:17 in the World English Bible
One thousand will flee at the threat of one. At the threat of five, you will flee until you are left like a beacon on the top of a mountain, and like a banner on a hill.
Context
16 But ye said, No; for we will flee upon horses; therefore shall ye flee: and, We will ride upon the swift; therefore shall they that pursue you be swift.
17 One thousand shall flee at the rebuke of one; at the rebuke of five shall ye flee: till ye be left as a beacon upon the top of a mountain, and as an ensign on an hill.
18 And therefore will the LORD wait, that he may be gracious unto you, and therefore will he be exalted, that he may have mercy upon you: for the LORD is a God of judgment: blessed are all they that wait for him.