I made it quite clear 1 John 5:16 is not speaking about types of sin it speaking about the type of people that sin
Post 66
http://www.christianityboard.com/topic/18559-homosexuality-revisited/page-3#entry203459
and 68
Of course the law governing people has weight or gravity to types of offenses but in Gods economy sin is sin, and he surly doesn't expect us to kill people for stealing food or children for fighting. You understand the point I'm sure.
The Levitical laws would be the equivalent of your catechism or your substitute to the laws given to Moses to govern the people.
It was not a part of the covenant of the 10 commandments, it is placed beside the Ark not in it. In fact Moses said that it would be a testimony against Israel, same probably holds true for yourself and your catechism, your bigger problem is I don't believe God gave you the catechism in the first place.
Det 31
24 So it was, when Moses had completed writing the words of this law in a book, when they were finished, 25 that Moses commanded the Levites, who bore the ark of the covenant of the Lord, saying: 26 “Take this Book of the Law, and put it beside the ark of the covenant of the Lord your God, that it may be there as a witness against you; 27 for I know your rebellion and your stiff neck.
If today, while I am yet alive with you, you have been rebellious against the Lord, then how much more after my death? 28 Gather to me all the elders of your tribes, and your officers, that I may speak these words in their hearing and call heaven and earth to witness against them. 29 For I know that after my death you will become utterly corrupt, and turn aside from the way which I have commanded you. And evil will befall you in the latter days, because you will do evil in the sight of the Lord, to provoke Him to anger through the work of your hands.”