First of all, I do not believe God can be accepted through scientific proof. Only faith. But exercises like this are fun anyway. I did not intend to actually prove God with this argument. Only to point out a big flaw I often see when secularists make claims like, "We're not supposed to believe lies," or, "We need to outgrow myths." Statements like these imply obligation beyond collective preference. But where does such obligation come from if mankind collectively constructs his own obligations?
Anyway, the basic proof structure is below. Axiom 2 is the main argument used by atheists here to construct the proof. I'm not going to try to do much to clean it up much though, even if it can be improved. Other than making easy-to-correct unintentional typos possibly. When acceptance of the axioms is the biggest problem in a proof, no point in breaking your back trying to perfect the rest of it.
Axioms
Axiom 1. There exists t such that SRL is not contained in C
Axiom 2. For all t, SRL is contained in MR
Axiom 3. If there exists x such that there exists t such that x is not contained in C and for all t, x is contained in MR then x is contained in NL
Axiom 4. For all y, if y is contained in MR then y is not contained in A
Axiom 5. If z is contained in NL and z is not contained in A, then I is an element of W
Axiom 6. If I is an element of W, then G is an element of R
Proof
Show G is an element of R given the axioms.
Line 1. Axiom 1 is true
Line 2. Axiom 2 is true.
Line 3. SRL is contained in NL by lines 1 and 2 and Axiom 3.
Line 4. By Axioms 2 and 4 and Line 3, SRL is not contained in A.
Line 5. By Lines 3 and 4 and Axiom 5, I is an element of W
Line 6. By Axiom 6 and Line 5, G is an element of R
Definitions
SRL = stopping religious lies
C = consensus
MR = moral requirement
t= time period
NL = natural moral law
A = accidental
I = intent
W = nature
G = God
R = reality
Translations
Axiom 1. There exists a time period where stopping religious lies was not a human consensus
Axiom 2. For all time periods stopping religious lies is a moral requirement
Axiom 3. If there is an action and there exists a time period where that action is not human consensus, and for all time periods that action is a moral requirement, then that action is a natural moral law.
Axiom 4. If there is an action that's a moral requirement, then it's not accidental
Axiom 5. If there is an action that's a natural moral law and it's not accidental then nature possesses intent
Axiom 6. If nature possesses intent, then God is part of reality