As Jews, it would be problematic to our theology if any exoplanet is found to contain intelligent life forms, since the basis of our creation beliefs focus solely on Earth being the center of the universe, for all intents and purposes. Plant or animal life may not be as big of an issue.
Also, there are many additional criteria that must be met in order for an exoplanet to be able to contain life as we know it, such as having a large outer planet being able to deflect most space debris that comes your way, having a moon to control tides and also deflect debris, having the exoplanet tilt on its axis to allow for variations in climate, and many others. So just finding a planet in the goldilocks zone is not enough.