God talks because he is declaring his purpose. He is available. He knows you are not worthy but that will not make God change. This id the study of the father who has a voice and wants to speak to you.
There were three major precautions taken by the enemies of Jesus that give us circumstantial evidence of His resurrection. Why do you seek the living among the dead? The feast of first fruits is about presenting your first fruits to God almighty. We celebrate the resurrection of the entire church of Jesus Christ.