Impressive - thank you!
But rather than address my objections, of which there are some, I will just state what ought to be obvious:
In order to be "rightly divided", the word of truth must certainly be divisible by some means. In other words, there is something about it that can be divided, and should be.
God's word itself offers many examples, most in twos, some in thirds, some sevens, as well as others. But then again, Paul does not say to rightly separate the word, as if there were multiple parts, but rather speaking in simpler terms he just says "divide." He might have elaborated, but didn't. Which would make the best right answer, to "rightly divide" in two. Such as: light and darkness, day and night, good and evil, wheat and tares, sheep and goats, Jews and Greeks, male and female, bond servant and free, old and new, flesh and spirit, God and man, heaven and earth, heaven and hell, etc.. Take any two of those and with two different colored highlighters, go through all the scriptures marking the words and passages that pertain to each...and I would venture to say, much would be revealed. But I recommend flesh and spirit, and God and man.
The result of such and exercise would render a clear(er) distinction of what in scripture pertains to living in the world and our time under the sun, as opposed to those things which are not of this world, but of the kingdom, and of God. One would follow a timeline, and the other not.
And then in our reading..."seek first the kingdom of God and His righteousness." Let there be a clear distinction.