Arcana Coelestia #4714
4714. 'And bring back word to me' means knowledge. This is clear from the meaning of 'bringing back word' as describing what the situation was, and so means knowledge.
Ezekiel 39:11
11
And it shall come to pass in that day, that I will give unto Gog a place there of graves in Israel, the valley of the passengers on the east of the sea: and it shall stop the noses of the passengers: and there shall they bury Gog and all his multitude: and they shall call it The valley of Hamon-gog.
