Why do we stand for the reading of the Gospel?

We normally sit during the readings of the Old Testament and the Epistles.  We sit because we are listening and learning...it's the same during the sermon.  As soon as the Gospel is brought out to be read however, those who are able to stand do so at attention.  We stand because we consider ourselves to be entering into conversation with Jesus who speaks to us as brothers and sisters who share with Him in the Kingdom of His Father.  We are drawn into His life through His words and deeds in the Gospel.  By standing we bear witness to the victory of Christ, and by standing we testify to our confidence and sure hope that His victory is ours as well.  Hallelujah!