may hear that you have killed so great a multitude, as if they were one man, and they may say
Other versions
King James Version
Now if thou shalt kill all this people as one man, then the nations which have heard the fame of thee will speak, saying,English Standard Version
Now if you kill this people as one man, then the nations who have heard your fame will say,New International Version
If you put these people to death all at one time, the nations who have heard this report about you will say,