Given the context of the 10 commandments, from whence this “ought” example is taken and given the course of the discussion seems to be leaning towards “oughts” are only conditional on the source you recognize for your authority, I would like to add the following 2 points:
- At mount Sinai, what were they doing? God was establishing a covenant relationship with the people he had just led out of slavery.
The covenant: I will be your God and you will be my people.
The understanding then was revealed to be:
Given that you intend to keep this covenant, these oughts or commands became very legal omni-conditional statements.
(and as we later saw were abused out right by the religious leaders of Jesus’s day)
As Jesus elaborates, the covenant became understood as not legalistic, but in spirit and in truth. The omni-ought rather became “you ought to strive to be perfect as your heavenly Father is perfect” What we are striving to be depends on our image of our heavenly Father.
If that image is so imperfect that we would never want to be like that, then we should not pursue it, but rather pursue a better image. God the Father is the best image, communicating that is sometimes a challenge and requires God to give the grace to see.
This we are told he will do for all who ask it.
- Human Beings have an interesting way of finding ways to “Border test and break” legal systems to their advantage. Focusing on the negative ought aspects of these commandments can easily lead to scruplosity and failure. These commandments flipped into their positive corrollaries. (positive ideologically not necessarily grammatically)
the 7 relating to man:
Thou shall honor thy Father and thy Mother (and arguably other authorities placed over you)
Thou shall not kill becomes
thou shall bring life.
Thou shall not commit Adultery becomes
thou shall be faithful.
Thou shall not steal becomes
thou shall be generous and protective of others
Thou shall not bear false witness becomes
thou shall bear witness to truth
Thou shall not covet thy neighbors wife becomes
thou shall strengthen the relationships around you
Thou shall not covet thy neighbors goods becomes
thou shall help your neighbor prosper
This turns our border testing around into finding creative ways to full-fill these more fully. This I would argue is the advantage of Christian morality over secular morality.