"If you love Me, you will keep My commandments." (John 14:15, ESV / NASB)
There seem to be at least two opposing interpretations of Jesus' above statement, and similar Scripture, namely the following:
"If you love me, you will [by nature] keep my commandments."
"If you love me, show it by doing what I’ve told you" (The Message, same verse)
Regarding the first view, some hold the view that
the whole Law is fulfilled in one word, in the statement, "You shall love your neighbor as yourself." (Gal 5:14)
then go on to say that love is the fruit of the Spirit, and finally conclude that any Law that is not a result of '[treating] people the same way you want them to treat you' (Matt 7:12b) is without authority.
Regarding the second view, others say
this is the love of God, that we keep His commandments (I John 5:3)
Stating that the Law defines love, and the Holy Spirit makes us willing to be obedient to those commandments, because we love God [and our neighbour.]
Both positions may affirm that the Holy Spirit causes us to have a genuine loving inclination to others. Yet people holding to the second position may impose commandments which people from the first position will label as 'ceremonial, hence not applicable.'
Based on the first position, commandments are only kept if this makes sense in the mind of the believer. To exemplify, a believer would only keep the weekly Sabbath day if he thinks that doing so is consequential to 'loving your neighbour.' This is then the measuring stick to define 'Ceremonial Law' and 'Moral Law.'
Based on the second position, commandments are kept whether they are being understood or not, because of a will to obey and please God by keeping His instructions. In this case, keeping of the commandments can be directly consequential to 'loving God.' The question then is not necessarily [only] if the commandment can be identified as being consequential to 'loving your neighbour', but rather if God requires the keeping of it.
Which of the two above views, if either of them, developed in Reformed Protestantism under the branch's inherent claim of Sola Scriptura?
(Above quotes NASB unless indicated)