The proclamation was in accordance with the Law (see the marginal reference). No mountain of the name of Gilead is known in this locality, and it has been conjectured that the right reading is Gilboa. Others think that this may be a form of proclamation customary in Manasseh.
Related Commentaries of Judges 7:3
Judges 7:3
3 Now therefore go to, proclaim in the ears of the people, saying, Whosoever is fearful and afraid, let him return and depart early from mount Gilead. And there returned of the people twenty and two thousand; and there remained ten thousand.