World Wide Study Bible
a Bible passage
25. For he supposed his brethren would have understood, &c.—and perhaps imagined this a suitable occasion for rousing and rallying them under him as their leader; thus anticipating his work, and so running unsent.
but they understood not—Reckoning on a spirit in them congenial with his own, he had the mortification to find it far otherwise. This furnishes to Stephen another example of Israel's slowness to apprehend and fall in with the divine purposes of love.