Acts 7:55 of the American Standard Version says, But he, being full of the Holy Spirit, looked up stedfastly into heaven, and saw the glory of God, and Jesus standing on the right hand of God. What does Jesus' position indicate? Is there a third person next to God in this account?
Jesus' place at the "right hand" symbolizes the position and power He has above all others. In Ephesians 1 19-21 Paul states "And what is the surpassing greatness of His power toward us, the ones believing according to the working of His mighty strength which He worked in Christ in raising Him from the dead, and He seated Him at His right hand in the heavenlies, far above all principality and authority and power and dominion, and every name being named, not only in this world, but also in the coming age" (Ephesians 1:19-21). I don't believe there would be a third person visible in this instance.