The reason I ask is because I know for a fact that …
there are “believers” in the churches who do NOT believe Jesus is God!
First, let me make this perfectly clear … 
In the original Greek, there is no “he” after “I AM” in any of the following verses!
John 8:58-59 
“Most assuredly, I say to you, before Abraham was, I AM.
Then they took up stones to throw at Him”
The Jews understood that He was claiming to be “I AM”,
which is God’s name “forever” (see Exodus 3:14-15).
John 18:5-8
“Jesus said to them, “I AM” … Now when He said to them, “I AM”, 
they drew back and fell to the ground … I have told you that I AM.”
God’s power, which knocked them to the ground, demonstrated to everyone 
(even to you) that Jesus was “I AM” (i.e. God), and that He was saying so!    
John 8:28 “When you lift up (crucify) the Son of Man, then (at the resurrection) 
you will know that I AM, and that I do nothing of Myself …”
Jesus had NO power of His own because He was in a human body (plus other reasons).
One verse says God in Him did the works; another says the Holy Spirit did the miracles.
John 13:19 
“Now I tell you before it (His betrayal) comes, 
that when it does come to pass, you may believe that I AM.”
Now, we come to the point of the OP …
John 8:24 
“Therefore I said to you that you will die in your sins; 
for if you do not believe that I AM, you will die in your sins.”
IMO, that Jesus is part of the Godhead is somewhat hidden in Scripture,
and needs to be revealed spiritually to a person.
However, this does NOT apply to those raised with blind faith to believe it.