Just because something is true, doesn't mean it is the governing truth of a matter.
One example:
It is true that we are to love our neighbor and avoid harshly criticizing others whose choices are not in line with our own sense of right and wrong.
This being true, however, does not mean we are to embrace, promote or advocate for lifestyle choices that are directly opposed to revealed truth regarding the law of chastity.
Another example:
It is true that the Lord's love is given unconditionally to us imperfect mortal children of His. This being true, however, does not mean that He does not favor obedient children over disobedient children. He loves all the same, but He does favor some over others, with assignments of responsibility or greater privileges. (1 Nephi 17: 35)
In this example, the equality of the love of God does not negate the inequality of His favor, which depends upon and is granted according to the diligence and heed that we show by our obedience to Him.
"Without a moral compass, the human mind will justify anything."
Mehrnaz Bassiri
A magnetic compass tells us how to orient ourselves with the magnetic field lines of the Earth, but it doesn't tell us which way to walk to reach our destination. Much of the truth we have operates in the same way. We must apply truth. Deciding how we act in response to truth will make all the difference. We mustn't wait for every decision to be made for us.
It is not good enough that we have some element of truth. Not all truth is of the same import. Not all truth is of the same weight. Not every truth is a governing truth of a decision or matter.
Much confusion can be avoided by opening our minds to more truth than we now understand. Because we can prove something to be true, does not justify its preeminence over other truths. Something else might very well be the governing truth of the matter in question.
Hold to the truth, and use it wisely and properly.
When faced with a question, seek the truth of the matter. Go for the highest truth revealed on any matter in question. Always reserve the right to learn and improve. You will do alright.
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See also:
Love and Law, by Dallin H. Oaks
Two Lines of Communication, by Dallin H. Oaks
The Cost—and Blessings—of Discipleship, by Jeffrey R. Holland
Powerful Ideas, by Dallin H. Oaks