Then people would just worship the source of that DNA as an icon. Through history God seems to have strenuously avoided doing things just like that. There's a reason there are no contemporary portraits of Jesus.
God did not at all forbid the veneration of objects associated with His saving acts. In fact, He ordered it.
I'm not sure you quite understood my point.
I'm a technical man and I just luv learning about the features of our universe that give hints of the divine. One example is the rare earth hypothesis, that validates (can't prove, but validates) that it took a universe as vast as ours, with so many trillions of suns and rocky planets, to have a single one with the right conditions such that God could create life.
Another example is the background microwave radiation that proves there was a big bang. Until the 1950s who would have thought for even a single minute that there would be scientific evidence of the moment of creation?
Back to my point. Jesus was a man, right? Flesh and blood, right? So did he have DNA? If he did, was it DNA from a man and a spirit? Or all from his mother? Or something else entirely?
If his dead face was resting underneath that shroud, perhaps enough cells wore away to leave some DNA.
Would that DNA be truly human or would it be divine? That's my point. And if the DNA that was found, and analyzed, and proved to be some kind of "perfect" DNA, that would most surely be a little clue about just who the man was!
As for worshiping the DNA, well ... I don't know about that. But it can't be much different than worshiping a piece of cloth. By itself, the cloth means nothing to me. But if it contains a hint, or a clue, to the man's whose dead face was resting underneath it, now that is fascinating.