p1 If God does not exist, there doesn't exist a perception to who we exactly are (since he alone can judge perfectly to value).
p2 If there doesn't exist a perception to exactly who we are, there doesn't exist exact value to who we are.
p3 There exists exact value to who we are (assertion)
Therefore God exists. (modus tollens with transitional rule to p2 and p1)
p1: Not G -> Not S
p2: Not S -> Not V
p3: V
c: G (modus tollens with transitional rule to p2 and p1)
I would argue if there is no concrete reality to who we are, would not be able to guesstimate to who we are. We guesstimate even without knowing the concrete value of ourselves or anyone, but have to live with some sort of estimation of people's actions and ours. These two relate, how we see ourselves impacts how we see others and vice versa. But we with some truth to our assessment realize it's not the whole thing.
That is to say, when you write a program on a computer, there is two ways it can happen:
(1) Writing a program in real life on a computer (you know computer exists)
(2) Writing a program in a dream on a computer (you assume it exists)'
To elaborate 2, and make the analogy, if you were lucid dreaming, you can write on the computer, but you wouldn't expect there to be a real program if you were fully aware that it's but a dream. You wouldn't take writing on it seriously, since it can produce anything, and have no bearing on what you program, since it's made up.
Same with the self and value. You make some sort of assessment on belief that hidden behind your vision, is a reality that there is true value. A true assessment of you is contained. The only way you should believe there is no true value, if you cease all assessment entirely related to personhood and value to people. You can't, because it's that ingrained in you to know you have value.
(V) Value to who we are.
(A) Assessment (estimation/guessing type) to who we are
Not V -> Not A
A
Therefore V (Modus tollens)