No, God is not all about the rule of law because law can never effect grace. Law can at best roughly frame grace in. Keep going to the New Testament, please.
With all due respect, you don’t understand grace, then. Grace does not free anyone from the obligation to obey the law (Romans 3:31); it frees us from the death penalty incurred from prior disobedience to itotherwise there would be no need for repentance to receive grace. Jesus was adamant about that when He said (in John 14:15) “If you love Me, obey My commandments” (talking about those commands/laws outlined in Exodus 20 and Deuteronomy 5).