Rev 17:8 LSV The beast that you saw: it was, and it is not, and it is about to come up out of the abyss, and to go away to destruction, and those dwelling on the earth will wonder, whose names have not been written on the Scroll of Life from the foundation of the world, beholding the beast that was, and is not, although it is.

It is not unprecidented for a president to serve, not serve, and serve again:
https://www.davemanuel.com/202....1/01/20/us-president