And I know that the record which I make is true; and I make it with mine own hand; and I make it according to my knowledge. (1 Nephi 1:3)
Some critics (e.g., Marian Bodine) have attacked the Book of Mormon on this basis that Nephi is denying that his record is inspired by God (or “God-breathed” [cf. 2 Tim 3:16]). Maybe it would be enough to bring up a similar comment by the apostle Paul:
But in my judgment she is more blessed if she remains as she is. And I think that I too have the Spirit of God. (1 Cor 7:40 | NRSV)
In this verse, Paul, speaking to the widow, is rather equivocal on this issue where, essentially, he is giving his own opinion on a matter. As the Lord has not given him a commandment on such matters, Paul can only "think" he knows God's will. Using the "logic" of Bodine, 1 Corinthians is to be jettisoned!
Furthermore, there are many instances in the Book of Mormon, including statements in 1 Nephi itself, affirming the inspiration of the Book of Mormon authors. Here are some representative examples:
And now I, Nephi, do not give the genealogy of my fathers in this part of my record; neither at any time shall I give it after upon these plates which I am writing; for it is given in the record which has been kept by my father; wherefore, I do not write it in this work. For it sufficeth me to say that we are descendants of Joseph. And it mattereth not to me that I am particular to give a full account of all the things of my father, for they cannot be written upon these plates, for I desire the room that I may write of the things of God. For the fulness of mine intent is that I may persuade men to come unto the God of Abraham, and the God of Isaac, and the God of Jacob, and be saved. Wherefore, the things which are pleasing unto the world I do not write, but the things which are pleasing unto God and unto those who are not of the world. Wherefore, I shall give commandment unto my seed, that they shall not occupy these plates with things which are not of worth unto the children of men. (1 Nephi 6:1-6)
And now, as I have spoken concerning these plates, behold they are not the plates upon which I make a full account of the history of my people; for the plates upon which I make a full account of my people I have given the name of Nephi; wherefore, they are called the plates of Nephi, after mine own name; and these plates also are called the plates of Nephi. Nevertheless, I have received a commandment of the Lord that I should make these plates, for the special purpose that there should be an account engraven of the ministry of my people. Upon the other plates should be engraven an account of the reign of the kings, and the wars and contentions of my people; wherefore these plates are for the more part of the ministry; and the other plates are for the more part of the reign of the kings and the wars and contentions of my people. Wherefore, the Lord hath commanded me to make these plates for a wise purpose in him, which purpose I know not. But the Lord knoweth all things from the beginning; wherefore, he prepareth a way to accomplish all his works among the children of men; for behold, he hath all power unto the fulfilling of all his words. And thus it is. Amen. (1 Nephi 9:2-6)
And I knew not at the time when I made them that I should be commanded of the Lord to make these plates; wherefore, the record of my father, and the genealogy of his fathers, and the more part of all our proceedings in the wilderness are engraven upon those first plates of which I have spoken; wherefore, the things which transpired before I made these plates are, of a truth, more particularly made mention upon the first plates. And after I had made these plates by way of commandment, I, Nephi, received a commandment that the ministry and the prophecies, the more plain and precious parts of them, should be written upon these plates; and that the things which were written should be kept for the instruction of my people, who should possess the land, and also for other wise purposes, which purposes are known unto the Lord. (1 Nephi 19:2-3)
And it came to pass that the Lord God said unto me: Make other plates; and thou shalt engraven many things upon them which are good in my sight, for the profit of thy people. Wherefore, I, Nephi, to be obedient to the commandments of the Lord, went and made these plates upon which I have engraven these things. (2 Nephi 5:30-31)
And now I speak somewhat concerning that which I have written; for after I had made an abridgment from the plates of Nephi, down to the reign of this king Benjamin, of whom Amaleki spake, I searched among the records which had been delivered into my hands, and I found these plates, which contained this small account of the prophets, from Jacob down to the reign of this king Benjamin, and also many of the words of Nephi. And the things which are upon these plates pleasing me, because of the prophecies of the coming of Christ; and my fathers knowing that many of them have been fulfilled; yea, and I also know that as many things as have been prophesied concerning us down to this day have been fulfilled, and as many as go beyond this day must surely come to pass--Wherefore, I chose these things, to finish my record upon them, which remainder of my record I shall take from the plates of Nephi; and I cannot write the hundredth part of the things of my people. But behold, I shall take these plates, which contain these prophesyings and revelations, and put them with the remainder of my record, for they are choice unto me; and I know they will be choice unto my brethren. And I do this for a wise purpose; for thus it whispereth me, according to the workings of the Spirit of the Lord which is in me. And now, I do not know all things; but the Lord knoweth all things which are to come; wherefore, he worketh in me to do according to his will. And my prayer to God is concerning my brethren, that they may once again come to the knowledge of God, yea, the redemption of Christ; that they may once again be a delightsome people. And now I, Mormon, proceed to finish out my record, which I take from the plates of Nephi; and I make it according to the knowledge and the understanding which God has given me. (Words of Mormon 3-9 BOM)
And now there cannot be written in this book even a hundredth part of the things which Jesus did truly teach unto the people; But behold the plates of Nephi do contain the more part of the things which he taught the people. And these things have I written, which are a lesser part of the things which he taught the people; and I have written them to the intent that they may be brought again unto this people, from the Gentiles, according to the words which Jesus hath spoken. And when they shall have received this, which is expedient that they should have first, to try their faith, and if it shall so be that they shall believe these things then shall the greater things be made manifest unto them. And if it so be that they will not believe these things, then shall the greater things be withheld from them, unto their condemnation. Behold, I was about to write them, all which were engraven upon the plates of Nephi, but the Lord forbade it, saying: I will try the faith of my people. Therefore I, Mormon, do write the things which have been commanded me of the Lord. And now I, Mormon, make an end of my sayings, and proceed to write the things which have been commanded me. (3 Nephi 26:6-12)
And now I, Mormon, make an end of speaking concerning these things for a time. Behold, I was about to write the names of those who were never to taste of death, but the Lord forbade; therefore I write them not, for they are hid from the world. (3 Nephi 28:24-25)
And also that a knowledge of these things must come unto the remnant of these people, and also unto the Gentiles, who the Lord hath said should scatter this people, and this people should be counted as naught among them-- therefore I write a small abridgment, daring not to give a full account of the things which I have seen, because of the commandment which I have received, and also that ye might not have too great sorrow because of the wickedness of this people. (Mormon 5:9)
Behold, I make an end of speaking concerning this people. I am the son of Mormon, and my father was a descendant of Nephi. And I am the same who hideth up this record unto the Lord; the plates thereof are of no worth, because of the commandment of the Lord. For he truly saith that no one shall have them to get gain; but the record thereof is of great worth; and whoso shall bring it to light, him will the Lord bless. For none can have power to bring it to light save it be given him of God; for God wills that it shall be done with an eye single to his glory, or the welfare of the ancient and long dispersed covenant people of the Lord. And blessed be he that shall bring this thing to light; for it shall be brought out of darkness unto light, according to the word of God; yea, it shall be brought out of the earth, and it shall shine forth out of darkness, and come unto the knowledge of the people; and it shall be done by the power of God. (Mormon 8:13-16)
And the Lord commanded the brother of Jared to go down out of the mount from the presence of the Lord, and write the things which he had seen; and they were forbidden to come unto the children of men until after that he should be lifted up upon the cross; and for this cause did king Mosiah keep them, that they should not come unto the world until after Christ should show himself unto his people. And after Christ truly had showed himself unto his people he commanded that they should be made manifest. And now, after that, they have all dwindled in unbelief; and there is none save it be the Lamanites, and they have rejected the gospel of Christ; therefore I am commanded that I should hide them up again in the earth. Behold, I have written upon these plates the very things which the brother of Jared saw; and there never were greater things made manifest than those which were made manifest unto the brother of Jared. Wherefore the Lord hath commanded me to write them; and I have written them. And he commanded me that I should seal them up; and he also hath commanded that I should seal up the interpretation thereof; wherefore I have sealed up the interpreters, according to the commandment of the Lord. For the Lord said unto me: They shall not go forth unto the Gentiles until the day that they shall repent of their iniquity, and become clean before the Lord. (Ether 4:1-6)
And now I, Moroni, have written the words which were commanded me, according to my memory; and I have told you the things which I have sealed up; therefore touch them not in order that ye may translate; for that thing is forbidden you, except by and by it shall be wisdom in God. And behold, ye may be privileged that ye may show the plates unto those who shall assist to bring forth this work; and unto three shall they be shown by the power of God; wherefore they shall know of a surety that these things are true. And in the mouth of three witnesses shall these things be established; and the testimony of three, and this work, in the which shall be shown forth the power of God and also his word, of which the Father, and the Son, and the Holy Ghost bear record-- and all this shall stand as a testimony against the world at the last day. And if it so be that they repent and come unto the Father in the name of Jesus, they shall be received into the kingdom of God. And now, if I have no authority for these things, judge ye; for ye shall know that I have authority when ye shall see me, and we shall stand before God at the last day. Amen. (Ether 5:1-6)
Wherefore, I, Moroni, am commanded to write these things that evil may be done away, and that the time may come that Satan may have no power upon the hearts of the children of men, but that they may be persuaded to do good continually, that they may come unto the fountain of all righteousness and be saved. (Ether 8:26)
And I was about to write more, but I am forbidden; but great and marvelous were the prophecies of Ether; but they esteemed him as naught, and cast him out; and he hid himself in the cavity of a rock by day, and by night he went forth viewing the things which should come upon the people. (Ether 13:13)
And the Lord spake unto Ether, and said unto him: Go forth. And he went forth, and beheld that the words of the Lord had all been fulfilled; and he finished his record; (and the hundredth part I have not written) and he hid them in a manner that the people of Limhi did find them. (Ether 15:33)
And if it so be that they perish, we know that many of our brethren have deserted over unto the Lamanites, and many more will also desert over unto them; wherefore, write somewhat a few things, if thou art spared and I shall perish and not see thee; but I trust that I may see thee soon; for I have sacred records that I would deliver up unto thee. (Moroni 9:24)