God Instills in each of us what He requires. No point of reference is required.
God the Father draws us to the Son. We only know the Father through the Son. We don't know the Father by any other way. In that respect, He provides the reference.
Your answer then is ‘void of reason’ when you say simply that ...”God Instills in each of us what He requires. No point of reference is required.”
What then do you base your moral decisions on? What foundation and test do you give to know if or not they are God’s standards?