1 Samuel 13

While the Prophet Joseph Smith was incarcerated in Liberty Jail, the word of the Lord came saying -

"Behold, there are many called, but few are chosen. And why are they not chosen?
35 Because their hearts are set so much upon the things of this world, and aspire to the honors of men, that they do not learn this one lesson—
36 That the rights of the priesthood are inseparably connected with the powers of heaven, and that the powers of heaven cannot be controlled nor handled only upon the principles of righteousness.
37 That they may be conferred upon us, it is true; but when we undertake to cover our sins, or to gratify our pride, our vain ambition, or to exercise control or dominion or compulsion upon the souls of the children of men, in any degree of unrighteousness, behold, the heavens withdraw themselves; the Spirit of the Lord is grieved; and when it is withdrawn, Amen to the priesthood or the authority of that man.
38 Behold, ere he is aware, he is left unto himself, to kick against the pricks, to persecute the saints, and to fight against God.
39 We have learned by sad experience that it is the nature and disposition of almost all men, as soon as they get a little authority, as they suppose, they will immediately begin to exercise unrighteous dominion.
40 Hence many are called, but few are chosen.

(Doctrine and Covenants | Section 121:34 - 40)

We witness the truthfulness of these words with Saul. Even though Saul was given a new heart and enpowered by the Spirit to great success, we also see that man has a tendency when given authority, exercise unrighteous dominion. Even though Saul was king, he was never given authority to administer sacrefices for the people. Because Samuel, the prophet who held authority, was delayed, the impatient Saul said -

"...Bring hither a burnt offering to me, and peace offerings. And he offered the burnt offering." (Old Testament | 1 Samuel 13:9)

The consequence for unrighteous dominion was great as Samuel asked -

"What hast thou done?" (Old Testament | 1 Samuel 13:11)

And then declared -

"Thou hast done foolishly: thou hast not kept the commandment of the LORD thy God, which he commanded thee: for now would the LORD have established thy kingdom upon Israel for ever.
14 But now thy kingdom shall not continue: the LORD hath sought him a man after his own heart, and the LORD hath commanded him to be captain over his people, because thou hast not kept that which the LORD commanded thee." (Old Testament | 1 Samuel 13:13 - 14)

"Hence many are called, but few are chosen." (Doctrine and Covenants | Section 121:40)