Scripture-first response
“Stephen saw two in heaven.”
Stephen sees God’s glory and the vindicated Son of man in the right-hand position of authority. The vision distinguishes the glorified man without creating two Gods.
What the objection is claiming
A visionary distinction between God’s glory and the Son of man is counted as two divine beings.
Acts 7:55-56
55 But he, being full of the Holy Ghost, looked up stedfastly into heaven, and saw the glory of God, and Jesus standing on the right hand of God, 56 And said, Behold, I see the heavens opened, and the Son of man standing on the right hand of God.Open full referenceStephen sees God’s glory and the Son of man standing in the place of divine authority and vindication.
How the passages answer it
The Son of man is the visible, glorified Messiah. God as Spirit remains invisible, represented by glory and throne imagery. Right-hand language communicates vindication and authority, while Revelation retains a one-throne, singular-face conclusion.