I am not trying to be more pessimistic here but i do acknowledge your agreement. When Apostle Paul in his writings addresses the word "sin" in most cases, it arrives to the point and means: (miss the mark). And his lead comes from "Jesus". "Sin is Miss the Mark" [missing the Bulls Eye]. on a target.
A adultery committed by a married woman, must likely comes from her hearth. Sins comes from the heart! People do evil things from their heart. But they do not see how evil their choices are in the site of Gods Word. The reason i am mentioning "The Heart" so many christians now days are talking about "from the Heart" Christian are to move by their Minds and not their hearts!
New International Version
The heart is deceitful above all things and beyond cure. Who can understand it?
New Living Translation
“The human heart is the most deceitful of all things, and desperately wicked. Who really knows how bad it is?
English Standard Version
The heart is deceitful above all things, and desperately sick; who can understand it?
Berean Study Bible
The heart is deceitful above all things and beyond cure—who can understand it?
New American Standard Bible
"The heart is more deceitful than all else And is desperately sick; Who can understand it?
Pastors are to act according to the Word of God [mind] and not their hearts! If they move from their hearts they are in error [sinning].
That is the problem, the sheep belongs to God, Feed them what He says and not what you feel they need.
You remember what "King Saul" did? When God told him to kill everything,
(1 Samuel 15)
7Then Saul attacked the Amalekites all the way from Havilah to Shur, near the eastern border of Egypt.
8He took Agag king of the Amalekites alive, and all his people he totally destroyed with the sword.
9But Saul and the army spared Agag and the best of the sheep and cattle, the fat calves
b and lambs—everything that was good. These they were unwilling to destroy completely, but everything that was despised and weak they totally destroyed.
10Then the word of the Lord came to Samuel:
11“I regret that I have made Saul king, because he has turned away from me and has not carried out my instructions.” Samuel was angry, and he cried out to the Lord all that night.
And remember King Saul was filled with the "Holy Spirit" as well.