Rev 3:3 Remember, therefore, what you have received and heard; hold it fast, and repent. But if you do not wake up, I will come like a thief, and you will not know at what time I will come to you.
Acts 1:11
Only the chosen ones' ( elect ) will hear the voice of God during this temporary generation. Then after the day of the Lord, all created men will hear His voice.
Mark 13:
20: And if the Lord had not shortened the days, no human being would be saved; but
for the sake of the elect, whom he chose, he shortened the days.
Revelation 3:
20: Behold,
I stand at the door and knock; if any one hears my voice and opens the door, I will come in to him and eat with him, and he with me.
Romans 11:
3: "Lord, they have killed thy prophets, they have demolished thy altars, and I alone am left, and they seek my life."
4: But what is
God's reply to him? "I have kept for myself seven thousand men who have not bowed the knee to Ba'al."
5: So too at the present time there is
a remnant, chosen by grace.
6: But if it is by grace, it is no longer on the basis of works; otherwise grace would no longer be grace.
7: What then? Israel failed to obtain what it sought.
The elect obtained it, but the rest were hardened,
8: as
it is written, "God gave them a spirit of stupor, eyes that should not see and ears that should not hear, down to this very day."
John 18:
37: Pilate said to him, "So you are a king?" Jesus answered, "You say that I am a king. For this I was born, and for this I have come into the world, to bear witness to the truth.
Every one who is of the truth hears my voice."
Exodus 19:
5: Now therefore,
if you will obey my voice and keep my covenant, you shall be my own possession among all peoples; for all the earth is mine,
John 15
16:
You did not choose me, but I chose you and appointed you that you should go and bear fruit and that your fruit should abide so that whatever you ask the Father in my name, he may give it to you.
So if you do not believe that I am the voice of God, then you were not chosen as one of the elect during this shortened generation. You will have to wait until you experience the death of your flesh before you hear my voice of God.
John 5:
25: "Truly, truly, I say to you, the hour is coming, and now is, when the dead will hear the voice of the Son of God, and those who hear will live.
26: For as the Father has life in himself, so he has granted the Son also to have life in himself,
27: and has given him authority to execute judgment, because he is the Son of man.
28:
Do not marvel at this; for the hour is coming when all who are in the tombs will hear his voice.
This doesn't mean your flesh is going to hear his voice. Your created consciousness is where you experience all visible images and God's voice so that's where you will hear His voice. You don't need a visible body to hear His voice speaking into your consciousness. Ask some of those people who have experienced an NDE ( near death experience ) and listen to them tell their stories about how they were able to observe doctors working on their bodies and hearing their voices. It's all happening within the invisible consciousness. That's where you observe your visible body, too.