You have an incorrect preconceived notion that the dead cannot speak. Holy Scripture says that the dead can and have.
1Sa 28:15 Then Samuel said to Saul, "Why have you disturbed me by bringing me up?" Saul answered, "I am in great distress; for the Philistines are warring against me, and God has turned away from me and answers me no more, either by prophets or by dreams; therefore I have summoned you to tell me what I shall do."
1Sa 28:16 And Samuel said, "Why then do you ask me, since the LORD has turned from you and become your enemy?
1Sa 28:17 The LORD has done to you as he spoke by me; for the LORD has torn the kingdom out of your hand, and given it to your neighbor, David.
1Sa 28:18 Because you did not obey the voice of the LORD, and did not carry out his fierce wrath against Am'alek, therefore the LORD has done this thing to you this day.
1Sa 28:19 Moreover the LORD will give Israel also with you into the hand of the Philistines; and tomorrow you and your sons shall be with me; the LORD will give the army of Israel also into the hand of the Philistines."
Grace and peace be to you.