Care to explain the how of three in one... take your time...
2 Nephi 31:
21 And now, behold, my beloved brethren, this is the way; and there is none other way nor name given under heaven whereby man can be saved in the kingdom of God. And now, behold, this is the doctrine of Christ, and the only and true doctrine of the Father, and of the Son, and of the Holy Ghost,
which is one God, without end. Amen.
Alma 11:
44 Now, this restoration shall come to all, both old and young, both bond and free, both male and female, both the wicked and the righteous; and even there shall not so much as a hair of their heads be lost; but everything shall be restored to its perfect frame, as it is now, or in the body, and shall be brought and be arraigned before the bar of Christ the Son, and God the Father, and the Holy Spirit,
which is one Eternal God, to be judged according to their works, whether they be good or whether they be evil.
Mormon 7:
7 And he hath brought to pass the redemption of the world, whereby he that is found guiltless before him at the judgment day hath it given unto him to dwell in the presence of God in his kingdom, to sing ceaseless praises with the choirs above, unto the Father, and unto the Son, and unto the Holy Ghost,
which are one God, in a state of happiness which hath no end.
The Testimony of Three Witnesses
And the honor be to the Father, and to the Son, and to the Holy Ghost,
which is one God. Amen.
Oliver Cowdery
David Whitmer
Martin Harris
1 Nephi 13: 41 And they must come according to the words which shall be established by the mouth of the Lamb; and the words of the Lamb shall be made known in the records of thy seed, as well as in the records of the twelve apostles of the Lamb; wherefore they both shall be established in one;
for there is one God and one Shepherd over all the earth.
Doctrine and Covenants 20 :
28 Which Father, Son, and Holy Ghost
are one God, infinite and eternal, without end. Amen.
1 John 5:7 For there are three that bear record in heaven: the Father, the Word, and the Holy Ghost; and
these three are one. Joseph Smith translation
Moses 1:6
6 And I have a work for thee, Moses, my son; and thou art in the similitude of mine Only Begotten; and mine Only Begotten is and shall be the Savior, for he is full of grace and truth;
but there is no God beside me, and all things are present with me, for I know them all.
COUNSEL GIVEN BY PRESIDENT CHARLES W. PENROSE
Now, some of our brethren have taken up quite a discussion as to the fulness of the everlasting gospel. We are told that the Book of Mormon contains the fulness of the gospel, that those who like to get up a dispute, say that the Book of Mormon does not contain any reference to the work of salvation for the dead and that there are many other things pertaining to the gospel that are not developed in that book, and yet we are told that the book contains "the fulness of the everlasting gospel." Well, what is the fulness of the gospel? You read carefully the revelation in regard to the three glories, Section 76, in the Doctrine and Covenants, and you find there defined what the gospel is.
There God, the Eternal Father, and Jesus Christ, his Son, and the Holy Ghost, are held up as the three Persons in the Trinity—the one God, the Father, the Word, and the Holy Ghost, all three being one God. When people believe in that doctrine and obey the ordinances which are spoken of in the same list of principles, you get the fulness of the gospel for this reason: If you really believe so as to have faith in our Eternal Father and in his Son, Jesus Christ, the Redeemer, and will hear him, you will learn ail about what is needed to be done for the salvation of the living and redemption of the dead.
(General Conference Report, April 1922, pp. 27-28.)