When the RYR claimed to have kept all the commandments
19 Thou knowest the commandments,
Do not kill,
Do not commit adultery,
Do not steal,
Do not bear false witness,
Do not defraud, Honor thy father and mother. Mk 10
8 Owe no man anything, save to love one another: for
he that loveth his neighbor hath fulfilled the law.
9 For this,
Thou shalt not commit adultery,
Thou shalt not kill,
Thou shalt not steal,
Thou shalt not covet, and if there be any other commandment, it is summed up in this word, namely, Thou shalt love thy neighbor as thyself.
10 Love worketh no ill to his neighbor:
love therefore is the fulfilment of the law. Ro 13
There's not a doubt in my mind that RYR was a genuine "doer of the law":
13 for not the hearers of the law are just before God, but
the doers of the law shall be justified:
14 (for when Gentiles that have not the law
do by nature the things of the law, these, not having the law, are the law unto themselves;
15 in that
they show the work of the law written in their hearts, their conscience bearing witness therewith, and their thoughts one with another accusing or else excusing
them); Ro 2
If there's ANY of you professing followers of Christ that are not 'doers/fulfillers' of the law by this standard you really need to do a deep self-examination. You're supposed to have had the law supernaturally written in your heart, 'working no ill to your neighbor' should be as natural to you as water is to a duck.