World Wide Study Bible
a Bible passage
56. I see … the Son of man standing, &c.—This is the only time that our Lord is by human lips called THE Son of Man after His ascension (Re 1:13; 14:14 are not instances). And why here? Stephen, full of the Holy Ghost, speaking now not of himself at all (Ac 7:55), but entirely by the Spirit, is led to repeat the very words in which Jesus Himself, before this same council, had foretold His glorification (Mt 26:64), assuring them that that exaltation of the Son of Man which they should hereafter witness to their dismay, was already begun and actual [Alford].