Prayer for son in pain

Please pray for my son, he is in so much pain and sorrow. he wants to die and end the hurt inside, he refuses help and wont let me know where he is or how to help him, he called tonight to say goodbye , he wants his lfe to be over. Please Heavenly Father!, My husband is dead, my son is grieved to the point of death. Please God! save my son! I cannot bear this burden alone, I need you Father God to deliver us!