Justin Martyr on the Relationship of Jesus Christ and God the Father

The problem with the Nicene Creed is one word which says that Christ and the Father are "homousious" or "one substance". This one word has led to the impossible mystery of the Trinity in trying to explain how 2 persons can be 1 being. On the other hand, LDS understand that God the Father and God the Son are just as Justin Martyr teaches in his discussion with Trypho the Jew; 2 numerically distinct persons, personages, and beings; yet 1 God unified in power, essence, will, and purpose. Therefore, The Nicene Creed should probably more correctly read that the Father and Son "are both composed of similar substance", or "are of similar substance" or "are composed of the same substance." It is precisely this understanding of the relationship of God the Son and God the Father and our rejection of the Nicene Creed why the rest of Christianity claims that LDS are not Christian, falsely claim that LDS are polytheists, that we worship another Christ, and claim that we are surely damned to hell.

Justin Martyr comments to Trypho Chapter 56. God who appeared to Moses is distinguished from God the Father
Justin: Reverting to the Scriptures, I shall endeavour to persuade you, that He who is said to have appeared to Abraham, and to Jacob, and to Moses, and who is called God, is distinct from Him who made all things—numerically, I mean, not [distinct] in will. For I affirm that He has never at any time done anything which He who made the world—above whom there is no other God—has not wished Him both to do and to engage Himself with. . . . 'Your throne, O God, is for ever and ever. A sceptre of equity is the sceptre of Your kingdom: You have loved righteousness and hated iniquity: therefore God, even Your God, has anointed You with the oil of gladness above Your fellows.' If, therefore, you assert that the Holy Spirit calls some other one God and Lord, besides the Father of all things and His Christ, answer me; for I undertake to prove to you from Scriptures themselves, that He whom the Scripture calls Lord is not one of the two angels that went to Sodom, but He who was with them, and is called God, that appeared to Abraham.

Christ is called God and Lord, but is numerically distinct from the Father

Justin Martyr comments to Trypho Chapter LXI—Wisdom is begotten of the Father, as fire from fire."
I shall give you another testimony, my friends,” said I, “from the Scriptures, that God begat before all creatures a Beginning,[who was] a certain rational power [proceeding] from Himself, who is called by the Holy Spirit, now the Glory of the Lord, now the Son, again Wisdom, again an Angel, then God, and then Lord and Logos; and on another occasion He calls Himself Captain, when He appeared in human form to Joshua the son of Nave (Nun). For He can be called by all those names, since He ministers to the Father’s will, and since He was begotten of the Father by an act of will; just as we see happening among ourselves: for when we give out some word, we beget the word; yet not by abscission, so as to lessen the word means both the thinking power or reason which produces ideas and the expression of these ideas. When we utter a thought, the utterance of it does not diminish the power of thought in us, though in one sense the thought has gone away from us. [which remains] in us, when we give it out: and just as we see also happening in the case of a fire, which is not lessened when it has kindled [another], but remains the same; and that which has been kindled by it likewise appears to exist by itself, not diminishing that from which it was kindled. The Word of Wisdom, who is Himself this God begotten of the Father of all things, and Word, and Wisdom, and Power, and the Glory of the Begetter.

Christ was begotten by the Father as one fire is able to kindle another fire which can stand beside the first yet is not divided therefrom nor diminishes from the first. Christ is not a chip off the old block.

Justin Martyr comments to Trypho Chapter LXII.—The words “Let Us make man” agree with the testimony of Proverbs."
And the same sentiment was expressed, my friends, by the word of God [written] by Moses, when it indicated to us, with regard to Him whom it has pointed out, that God speaks in the creation of man with the very same design, in the following words: ‘Let Us make man after our image and likeness. And let them have dominion over the fish of the sea, and over the fowl of the heaven, and over the cattle, and over all the earth, and over all the creeping things that creep on the earth. And God created man: after the image of God did He create him; male and female created He them. And God blessed them, and said, Increase and multiply, and fill the earth, and have power over it. And that you may not change the [force of the] words just quoted, and repeat what your teachers assert,—either that God said to Himself, ‘Let Us make,’ just as we, when about to do something, oftentimes say to ourselves, ‘Let us make;’ or that God spoke to the elements, to wit, the earth and other similar substances of which we believe man was formed, ‘Let Us make,’—I shall quote again the words narrated by Moses himself, from which we can indisputably learn that [God] conversed with some one who was numerically distinct from Himself, and also a rational Being. These are the words: ‘And God said, Behold, Adam has become as one of us, to know good and evil.’ In saying, therefore, ‘as one of us,’ [Moses] has declared that [there is a certain] number of persons associated with one another, and that they are at least two. For I would not say that the dogma of that heresy which is said to be among you is true, or that the teachers of it can prove that [God] spoke to angels, or that the human frame was the workmanship of angels. But this Offspring, which was truly brought forth from the Father, was with the Father before all the creatures, and the Father communed with Him; even as the Scripture by Solomon has made clear, that He whom Solomon calls Wisdom, was begotten as a Beginning before all His creatures and as Offspring by God,

God the Son and God the Father are One God in purpose yet numerically distinct and separate persons, personages and rational beings.

Justin Maryr comments to Trypho Chapter Chapter 128 The Word is sent not as an inanimate power, but as a person begotten of the Father's substance
And do not suppose, sirs, that I am speaking superfluously when I repeat these words frequently: but it is because I know that some wish to anticipate these remarks, and to say that the power sent from the Father of all which appeared to Moses, or to Abraham, or to Jacob, is called an Angel because He came to men (for by Him the commands of the Father have been proclaimed to men); is called Glory, because He appears in a vision sometimes that cannot be borne; is called a Man, and a human being, because He appears arrayed in such forms as the Father pleases; and they call Him the Word, because He carries tidings from the Father to men: but maintain that this power is indivisible and inseparable from the Father, just as they say that the light of the sun on earth is indivisible and inseparable from the sun in the heavens; as when it sinks, the light sinks along with it; so the Father, when He chooses, say they, causes His power to spring forth, and when He chooses, He makes it return to Himself. In this way, they teach, He made the angels. But it is proved that there are angels who always exist, and are never reduced to that form out of which they sprang. And that this power which the prophetic word calls God, as has been also amply demonstrated, and Angel, is not numbered [as different] in name only like the light of the sun but is indeed something numerically distinct, I have discussed briefly in what has gone before; when I asserted that this power was begotten from the Father, by His power and will, but not by abscission, as if the essence of the Father were divided; as all other things partitioned and divided are not the same after as before they were divided: and, for the sake of example, I took the case of fires kindled from a fire, which we see to be distinct from it, and yet that from which many can be kindled is by no means made less, but remains the same.

Christ is numerically distinct from the father who is begotten of the Father and not a part divided off from the Father. Christ does not act by His own power but only by the unified Power and Will with God the Father. God the Father and God the Son are numerically distinct but unified in power and essence and will.