D&C 1

In a preface to His revealed Doctrine and Covenants the Lord knew what our day would be like and said -

"Wherefore, I the Lord, knowing the calamity which should come upon the inhabitants of the earth, called upon my servant Joseph Smith, Jun., and spake unto him from heaven, and gave him commandments." (Doctrine and Covenants Section 1:17)

And not to him only but -

"...also gave commandments to others, that they should proclaim these things unto the world; and all this that it might be fulfilled, which was written by the prophets—" (Doctrine and Covenants Section 1:18)

For -

"The weak things of the world shall come forth and break down the mighty and strong ones, that man should not counsel his fellow man, neither trust in the arm of flesh—
20 But that every man might speak in the name of God the Lord, even the Savior of the world..." (Doctrine and Covenants Section 1:19 - 20)

That is every person has to right to bear testimony in the name of Jesus Christ, that -

"...faith also might increase in the earth;
22 That mine everlasting covenant might be established;
23 That the fulness of my gospel might be proclaimed by the weak and the simple unto the ends of the world, and before kings and rulers.
24 Behold, I am God and have spoken it; these commandments are of me, and were given unto my servants in their weakness, after the manner of their language, that they might come to understanding." (Doctrine and Covenants Section 1:21 - 24)

That inasmuch as men have -

"...erred it might be made known;
26 And inasmuch as they sought wisdom they might be instructed;
27 And inasmuch as they sinned they might be chastened, that they might repent;
28 And inasmuch as they were humble they might be made strong, and blessed from on high, and receive knowledge from time to time." (Doctrine and Covenants Section 1:25 - 28)

What a great promise of the Lord to His saints that for -

"...those to whom these commandments were given, might have power to lay the foundation of this church, and to bring it forth out of obscurity and out of darkness, the only true and living church upon the face of the whole earth, with which I, the Lord, am well pleased..." (Doctrine and Covenants Section 1:30)

Of course -

"...speaking unto the church collectively and not individually—
31 For I the Lord cannot look upon sin with the least degree of allowance..." (Doctrine and Covenants Section 1:30 - 31)

The Lord concludes with this powerful statement -

"What I the Lord have spoken, I have spoken, and I excuse not myself; and though the heavens and the earth pass away, my word shall not pass away, but shall all be fulfilled, whether by mine own voice or by the voice of my servants, it is the same." (Doctrine and Covenants Section 1:38)

"For behold, and lo, the Lord is God, and the Spirit beareth record, and the record is true, and the truth abideth forever and ever. Amen." (Doctrine and Covenants Section 1:39)