Adam Clarke on Psalms 68:11

Great was the company of those that published it - המבשרות צבא רב hammebasseroth tsaba rab; "Of the female preachers there was a great host." Such is the literal translation of this passage; the reader may make of it what he pleases. Some think it refers to the women who, with music, songs, and dances, celebrated the victories of the Israelites over their enemies. But the publication of good news, or of any joyful event, belonged to the women. It was they who announced it to the people at large; and to this universal custom, which prevails to the present day, the psalmist alludes. See this established in the note on Isa 40:9 (note).