Likutay Moharan - Torah-teaching 182

182 - What the World Speaks During the Counting

Know that during the days of the Omer counting, all conversations in the world revolve solely around the sefira (-divine attribute) of that particular day. One who is perceptive can listen and recognize this by carefully attuning their ear to the narratives in people's words; they will hear that the discussions pertain only to the sefira of that day.