It is not clear exactly what is meant by prophesying in this context. Some commentators propose that these prophetic groups would enter into a trance state or some other form of altered consciousness. However, given their instructional role in wider Israelite society (see 2 Kings 4:13; 2 Kings 6:9; 1 Chronicles 29:29) this seems improbable. More likely they were particularly zealous for the Lord and obedient to his commands. As such, their prophesying has more to do with singing songs of praise1 and encouraging fellow Israelites to walk in God’s ways.2
10 Lorsqu'ils arrivèrent à Guibea, voici, une troupe de prophètes vint à sa rencontre. L'Esprit de Dieu le saisit, et il prophétisa au milieu d'eux.