MEC,
But what if the picture that I 'choose' is Satan in disguise. Or actually a 'picture of Satan' but 'called Jesus'? Since neither you nor I KNOW what Jesus Looks like, how would we KNOW if the representation was 'righteous' or 'NOT'?
You have a strange, strange kind of theology of art.
You seem to take art as the reality that it represents to us. An image of Satan that is drawn precisely to look like the person of Jesus is not really a representation of Satan, but rather of Jesus.
Now if the artist was indeed satanic and wanted to trick us by presenting to us a satan that we took for Jesus
he would have to leave clues in the painting, like a small little devil's tail behind the cloak (or possibly something more sublime). If he did not leave those clues than he has failed to represent satan, even secretly, to us.
Art represents to us the reality of some idea or person. In order to represent that idea or person, the art work has to expressly visibly what correlates realistic to that person or idea.
I can not draw a chair, and say that this is in fact, my portrayal of the king, unless of course there is a connection between the king and chair. In this case, the chair is an able symbol for the king's authority and power, and hence, a workable image for the king.
I can not, however, draw the chair and say this is a successful portrayal of the pauper. There is no connection between the two.
So if a painting is of Jesus, and we can see that it is of Jesus, then that is what the painting represents. There are no paintings of Christ that are "invisibly" of the devil.