  We consider for the first time the solutions of Klein-Gordon equation in
gravitational field of {\em a massive} point source in GR. We examine
numerically the basic bounded quantum state and the next few states in the
discrete spectrum for different values of the orbital momentum. A novel feature
of the solutions under consideration is the essential dependence if their
physical properties on the gravitational mass defect of the point source, even
not introduced up to recently. It yields a repulsion or an attraction of the
quantum levels up to their quasi-crossing.
