. . . you are a microcosm of Me - the Divine All, the Holy Everything, the Sum and Substance. . . the Alpha and the Omega. . . Yes, I am God, as you now understand Him. I am Goddess as you now comprehend Her, I am the Conceiver and the Creator of Everything you now know and experience, and you are My children. . . even as I am the child of another.
It would be pleasant to believe that some of Lincoln's DNA is actively swimming around in somebody's soup, but all the evidence is against it. And of course, there's always the risk that what we might get would be more Robert Todd Lincoln than Abraham Lincoln.