39  And after it had come forth unto them I beheld other books, which came forth by the power of the Lamb, from the Gentiles unto them, unto the convincing of the Gentiles and the remnant of the seed of my brethren, and also the Jews who were scattered upon all the face of the earth, that the records of the prophets and of the twelve apostles of the Lamb are true.

  30  And now I make an end of speaking concerning the things which I saw while I was carried away in the Spirit; and if all the things which I saw are not written, the things which I have written are true. And thus it is. Amen.

  6  O my sons, I would that ye should remember that these sayings are true, and also that these records are true. And behold, also the plates of Nephi, which contain the records and the sayings of our fathers from the time they left Jerusalem until now, and they are true; and we can know of their surety because we have them before our eyes.

  12  And it is they who have kept the records which are true of their people, and also of the people of the Lamanites.

  11  But he that believeth these things which I have spoken, him will I visit with the manifestations of my Spirit, and he shall know and bear record. For because of my Spirit he shall know that these things are ^dtrue; for it persuadeth men to do good.