YOU'RE MY HOPE AND LOVE.

I trust you meant to say "A light's been lit inside my heart".   The syntax of "A light has lit inside my heart." makes light the subject of the verb "lit" and requires, to be grammatically correct, that you say what it is that light has ignited.    
   
And look at the  limited and repetitious vocabulary in your first stanza    
   
loved    it ...it    
it    
love ... it.    
it ...it  
 
Then there's this:  
 
"It makes me think about the source"  
 
Presumably, you meant to say that the light you know that has been lit in your heart makes you think (or wonder) about who or what caused it to be lit or what the source of the light is. But this is not stated.  Nor is it implied. In other words, for your line to be coherent, you need to write ""It makes me think about its source".

Very dear Baldwin,
Thank you very much for your very valuable remarks. J.Z.

A change of one word in the first line of your first stanza does nothing to change the fact that the rest of it is set out using overly repeated words and lacks any kind of beautiful language.  
   
Moreover,  how does the fact that there is a light inside your heart need proof of "its" existence?  If your claim is true, then it's self-evident that it exists where you say it does.  
   
Perhaps what you meant to say in the light of your title of this piece was  
   
A light has shone inside my heart.
it comes from Jesus up above.  
I've loved it much and knelt to it  
as it has given me the proof  
I need to know that I am loved.

You say that Jesus has become    
your only hope.  
But you don’t specify  
just what the aspiration is  
that he’s your anchor for.  
   
And so you leave  
your readers wanting more from you  
to know just why it is  
you make the (rather fawning) claims    
about the disembodied Nazarene  
that you are wont to do,  
and hard in need to see  
if they indeed    
have any reason to believe  
the claims you make  
are true.  

They cannot give your note  
a "yes" or a straight "nope"  
if they have no idea of  
what constitutes your hope.    
   
In other words,  
you need to designate  
just what your hope is for  
(e.g. a life beyond the grave?)  
if you’re to save  
your line from its vacuity  
and rescue it from how  
its sense is now obscure  
and not first-rate.

Hey Joseph. Very rich vocabulary! I love the light it emits too.

"Hey Joseph. Very rich vocabulary!"    
   
I wonder if you'd do me the kindness not only of telling me what you mean by "rich vocabulary"  but of pointing out exactly which of the lines in this stanza display it and how the words within them fit your understanding of a vocabulary that is "rich".  
   
"A light has shone inside my heart.    
I've loved it much and knelt to it    
as it has given me a sight    
I love to see that it exists."    
   
and in each of the ones that follow it.

Very dear Aaron,
Thank you very much for your read and comment. I couldn't answer you earlier because my site on DUP was cut off. They told me that my site was not private, and it was exposed to hackers. J.Z.

Very dear Baldwin,
Who told you that poetry is just richness in vocabulary. I wish you could write something as rich in thoughts as l do so that l can enrich my thoughts about life through reading your poetry and thanking you.J.Z.

"Who told you that poetry is just richness in vocabulary [SIC ?].    
     
No one told me that. And anyone who says that poetry is JUST richness in vocabulary is wrong.      
     
And I never said that poetry was JUST richness in vocabulary.  But verse that does not show richness in the vocabulary used within it is more often than not very dull and rarely evocative or worth remembering.  
     
In any case, the issue here is the truth of the claim made by AaronBraveHeart (Boyana Popova)  that your piece above displays "rich vocabulary", not what poetry is.

"I wish you could write something as rich in thoughts as l do"    
     
Did you mean to say "as rich WITH thoughts as my submissions are"?  
 
https://english.stackexchange.com/questions/140323/rich-in-vs-rich-with  
     
Perhaps you'll point me to the particular "thoughts" that you think your submissions are "rich " with so that I can have concrete examples of the thoughts you are asking me to display in my submissions.    
     
And perhaps you'll also give me your opinion on the  truth of the claim that if  "thoughts" of any kind are not  "richly worded" (let alone are  counterfactual, grammar gaffed ill-informed, historically off base,  or nonsensical)) when expressed, they lack the power to enrich anyone's understanding of life.

Cut the reply that focuses only on whether "rich with" is correct  and does not point me to he particular "thoughts" that JZ claims his submissions are "rich " with or that speaks to whether it's true that  if  "thoughts" of any kind are not  "richly worded" (let alone are  counterfactual, grammar gaffed ill-informed, historically off base,  or nonsensical)) when expressed, they lack the power to enrich anyone's understanding of life.

" I wish you could write something as rich in thoughts as l do [sic] so that l can enrich my thoughts about life "  
   
Please tell me how my writing something that has within it an abundance of my thoughts about things will enrich your thoughts about life.  
   
How does this series of thoughts:-- which is something I've written    
   
I like ice cream  
my cat is growing old  
I never can have enough books  
my socks need washing  
it's cold today  
coffee smells good  
Luke 22:44 does not say Jesus seated blood  
I need more sleep  
Easter is near  
I hate nosebleeds  
age sucks  
My motorcycle is getting old  
I don't like to ride in the rain  
I miss England  
my heart hurts  
   
enrich your thoughts about life?  
   
   
   
   
 

It appears that Joseph has left us.

Oh no! Do you know if he is well?

Dear Boyana,
I am still with you, but there is something wrong with my message acceptance.J.Z.

Will you write a new poem soon? I am expecting with great joy your new entries!