Acts 7:55

‘But he, being full of the Holy Spirit, looked up steadfastly into heaven, and saw the glory of God, and Jesus standing on the right hand of God,'

For to Stephen a wonderful thing happened. Being full of the Holy Spirit (the continuous experience of his life) he looked up towards heaven and saw the glory of God, and Jesus standing at the right hand of God. He had begun his words describing the God of glory (Acts 7:2), and now he saw something of the revelation of that glory. And he saw Jesus standing on His right hand as God's Messiah (compare Psalms 110:1). The description must not be taken too literally. There is no reason to think that he saw two figures. The glory of God would probably be a blinding and all enveloping light. And the figure of the Son of Man was necessary in order to stress that the resurrected Christ, both God and Man, was seen as being there as glorifed Man with the Godhead, as essentially united with the Godhead. ‘At His right hand' indicates the position of power and authority that He enjoyed. He now had all authority in heaven and earth (Matthew 28:18). The indefinable was being expressed. What could not be explained was being revealed. And Stephen was simply trying to explain in human terms the wonder of what he saw. It was not a time for definition but for awe. Here was the open revelation of Jesus' triumph, and that the Kingly Rule of God had come.