I won't pick apart these approaches because in some of the more earnest and enthusiastic phases of my spiritual life, I would have said the same thing.
The contention of the first commenter I mentioned is that things are morally wrong just because God, or Jesus, says that they are, whether or not the outcome of a particular "good" action has a good result. In this view, if your spouse is attacked and killed by an intruder and you could have stopped it, but didn't because of your pacifist convictions, then you did a good and moral thing.
I argued that morality, in general, is tied to utility and reality. While some things that we do are good and bad in and of themselves, most of our moral choices are based on outcomes, both for ourselves and for our communities. Immoral choices are choices that generally have negative consequences for an individual and those around them. Those negative consequences might be immediate, or they might be long term in nature, such as causing the destabilization of the community, or creating an atmosphere that contributes to encouraging more bad choices by other people.
Even though I argued from this angle, I only partially believe that morality is tied to utility. I do believe that many choices are intrinsically moral, though it gets hard to pin those intrinsically moral choices down. From a Christian perspective, good choices are meant to reward us either with a peaceful heart in this life, or heavenly blessings in the next life. It's hard to classify Christian morality as a cause without an effect.
Behind the commenter's assertion that radical pacifism was the highest good was the contention that this life was relatively meaningless. What mattered was the next life, the destination of the person who was killed. It's a breathtaking statement that comforts some one who has so loosened their bonds with this life that nothing else is important.
While thinking about this, I recalled a passage in the gospels about the rewards of those who would follow Jesus, because I could have sworn that passage referred to rewards in the here and now, instead of being rewarded in the next life.
I found the passage in Mark and then looked up the parallel passages in the other gospels.
What I found will be the basis of my next post.