Brad,
I have given a 4th reading and this is my reply and I deeply apologize to all for the longevity, but I had to get it out....
Is it the law that we are to love the Lord with all our heart, soul, mind and strength and our neighbor as we love ourselves?
Instead, it says that the whole Law hangs from these two grandest Laws. Meaning, if you do these two, you will inadvertently do the rest. Love for God would cause one not to have another god and by which, you have kept that commandment. Love for another would cause one not to steal from him and by which, you have kept that commandment. It is by love that we do walk pleasingly before God, because Love fulfills the Law. Indeed, Jesus showed us how to walk pleasingly before God through love and told us that it is no longer through the flesh and what it can accomplish.
Do we become a transgressor if we do not love the Lord in this manner?
Yes, we do become a transgressor if we do not love the Lord or others in the manner our Lord Christ told us. If we do not love God in this manner, then we walk contrary to what He has said concerning what is love towards Him: have no other god. Does not the Law written upon our hearts tell us the same when we are convicted by the Spirit?
Is not the love of God a reciprocated love where we love Him because he first loved us (1 John 4:19)?
Yes, and if we love Him we would desire to walk pleasingly before Him. Has He not told us what is pleasing and not pleasing before Him? How can we Christians tell God that since He wrote concerning His essence (of those things which do and do not please Him) in the Old Testament that we are no longer obliged to walk in a manner which is in harmony to what He has said concerning Himself? Shall we tell Him that He erred in having written that Law expressing that essence we define as love?
How can we love without the Spirit shedding that love abroad in our hearts (Rom 5:5)?
May I suggest to you a study of the words 'phileo (G5368 (sensational love))' and 'agape (G25 (love from the heart/mind))' and you will see that it says that 'God is Agape' and that a human, even apart from God, can not only phileo, but also agape one another. And we will also see that in Romans 5:5, it is God's love which He has for us that is shed abroad in us when He introduced His love for us in Romans 5:8, just as nothing can separate us from Christ's love in Romans 8:35 or God's Love which is in Him, our Lord Romans 8:39. But, yes! We can agape apart from God.
Obedience to the law does not fill us with the love of God?
It is God who fills us with His Love for us. And that Love He has given, that is what we reciprocate back to Him and others. Not the love we naturally have, but the love only His children possess, His love.
Keeping the Sabbath does not fill us with the love of God, yet we are commanded to love God and our neighbor. It is the Spirit that fills us with the love of God and we are to be continually filled with the Spirit (Eph 5:18 - present passive imperative).
And during those times when we are not in alignment to the Will the Spirit speaks to us, then we are not in that state of love. And if not in that state of love, then we are walking contrary to God's Will and are thus convicted as transgressors of God's Law.
Before Ephesians 5:18 it is said:
Eph 5:15 See then that ye walk circumspectly (exactly, accurately, diligently), not as fools, but as wise,
Eph 5:16 Redeeming the time, because the days are evil.
Eph 5:17 Wherefore be ye not unwise, but understanding what the will of the Lord is.
If we are to walk accurately, then what is it that tells us what the Lord's will is if not that which He Himself has written upon our hearts? He has told us His Will, so let us walk accordingly.
There is no law or combination of laws that if we keep that will fill us with the nature of the love of God.
Law does not give us love. But, God has filled us with His Love. And it is said that that Love is what fulfills the Law. If you love someone, would you do that which they consider offensive to them? If God has said it is offensive to Him for one to do harm (evil), then would one not go and seek what He has said to be offensive to Him so that that one would not cause harm to God? Of course one would. That one would not find reason to walk offensively, but pleasingly if they have God's love in them.
God so loved the world that He gave His only begotten Son. He did not do that according to the law but according to love, mercy and grace. We are to know the love of God through faith that works by love and not through keeping the law (Gal 5:6).
Know this also, all which the Law says hangs upon Love. If one loves, then one is fulfilling the Law. This is not the same as being justified by Law (Galatians 5:4), it is loving God, so as to not walk offensively before Him. Truly, to know God is to love God and to love God one would walk the path He has set, the same path our Shepherd LEADS on. Nothing good can be thought when someone says, 'the black sheep of the family'. How then can it work with us if we do evil this, because love will do no evil (harm)?
If we sin the Holy Spirits takes care of that through conviction even in those areas that the law could never touch because it lacks and is weak (Rom 8:2,3).
Does it say that or does it say that the Law was weak BECAUSE of flesh. Yet, if we die to the flesh, we become alive to the Spirit, the Same spirit Who leads on the path which is according to God's eternal Will.
This is why Jesus said in (Matt 5:25-28)...
I understand your example here
The law is good and holy but we do not live by the law we live by the Spirit who is greater and far exceeds the law in glory, in holiness and with conviction in the heart of man. The law is made only for the natural man of the flesh, but the Spirit is given to the spiritual man who walks and is led of the Spirit.
Yet, none of us can deny that God has written His Law upon our hearts. By what does the Spirit convict? If we are not in agreement to what the Spirit says is God's Will, then are we not offenders of that Will, transgressors, if you will? Indeed, God's will has not changed, only the method (fleshly to spiritual).
1 Cor 2:11-16
13 Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.
14 But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.
15 But he that is spiritual judgeth all things, yet he himself is judged of no man.
16 For who hath known the mind of the Lord, that he may instruct him? but we have the mind of Christ. (not the law of God)
Does it not also say in Romans 8:4 that the righteousness of the Law is fulfilled in us when we ARE WALKING (Present Active Participle) according to the Spirit? What happens then if we ARE WALKING according to the flesh? Is the righteousness of the Law then fulfilled? So then, let us fulfill the righteousness of the Law by walking according to the Spirit.