If the Mormon 'witnesses' were still on earth; you could ask them.
An 1830 statement titled "Testimony of Three Witnesses"—one statement signed by three men rather than three separate statements—was published at the end of the first edition of the Book of Mormon:
Be it known unto all nations, kindreds, tongues, and people, unto whom this work shall come: That we, through the grace of God the Father, and our Lord Jesus Christ, have seen the plates which contain this record, which is a record of the people of Nephi, and also of the Lamanites, his brethren, and also of the people of Jared, who came from the tower of which hath been spoken. And we also know that they have been translated by the gift and power of God, for his voice hath declared it unto us; wherefore we know of a surety that the work is true. And we also testify that we have seeen [sic] the engravings which are upon the plates; and they have been shewn unto us by the power of God, and not of man. And we declare with words of soberness, that an angel of God came down from heaven, and he brought and laid before our eyes, that we beheld and saw the plates, and the engravings thereon; and we know that it is by the grace of God the Father, and our Lord Jesus Christ, that we beheld and bear record that these things are true. And it is marvellous [sic] in our eyes. Nevertheless, the voice of the Lord commanded us that we should bear record of it; wherefore, to be obedient unto the commandments of God, we bear testimony of these things. And we know that if we are faithful in Christ, we shall rid our garments of the blood of all men, and be found spotless before the judgment-seat of Christ, and shall dwell with him eternally in the heavens. And the honor be to the Father, and to the Son, and to the Holy Ghost, which is one God. Amen.
Easy! Gospel of John clearly explains the ‘oneness’ of God WHICH IS IN PURPOSE ... NOT PERSONNA
John 17 21 That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me.
22 And the glory which thou gavest me I have given them; that they may be one, even as we are one:
NOTICE: “THAT THEY MAY BE ONE, EVEN AS WE ARE ONE”.
Yes God, Christ and the Holy Ghost are one in purpose. No .... they are not an undefined heavenly mist which morphs from three beings to one and back again...... (it’s really amazing anyone could believe that!)
Go ahead and strain at a gnat while swallowing your camel.