The pic isnt too clear but I think I see the red hourglass, that's a black widow (female). There should also be white on its underside.
EDIT: After closer look, that doesn't look like an hourglass (and I remembered the white is on the back and the red is on the underside). May not be a widow. It is possible its an Australian Redback but your in Isreal so I'm not so sure they dwell that far.