If it is true that...

God is goodness itself

Then it must be true that...

If God does not exist, we live in a relativistic system

If it is true that...

God is the truth itself

Then it must be true that...

If God does not exist, we live in a relativistic system

If it is true that...

Every logical system must have a base axiom

and

Without objective truth and objective goodness, a moral system cannot stand on its own

Then it must be true that...

If God does not exist, we live in a relativistic system