A couple of points here:
1) If you are going to use the term "homoousios" as a synonym for "Godhead"--don't you think you should at least believe it?
I mean--"homoousios" means "same substance"--and the critics here have one Person of the Godhead as one substance--and another Person as a different substance--right? Jesus is an exalted man of flesh and bones, and the Father--Spirit only?
The Book of Mormon and D&C both teach The Father, Son and Holy Spirit are ONE GOD
2) The term "one God" is used in exclusion to God the Son in the NT, and only included God the Father:
The New Testament and Book of Mormon are clear Jesus is GOD
1. “To those who through the righteousness of Our God and Savior Jesus Christ,” 2 Peter 1:1
Emphatic Diaglott & New King James
2. “The glorious appearing of our Great God and Savior, Jesus Christ,” Titus 2:13 Emphatic Diaglott, NKJ
3.”Keep watch over yourself and all the flock of which the Holy Spirit has you overseer. Be shepherds of the Church of God, which he bought with his own blood.” Acts 20:28 New International V
4.”Theirs are the patriarchs, and from them is traced the human ancestry of Christ, who is God over all forever praised amen” Romans 9:5 King James
5.”The life appeared, we have seen it and testified to it, and we proclaim to you the Eternal Life, which was with the Father and has appeared to us.” 1 John 1:2 King James
and we are in him who is the true even in his son Jesus, He is the True God and Eternal Life,” 1 John 5:20 King James
6.”In the beginning, was the WORD, and the WORD was with GOD and the WORD was GOD Himself.” John 1:1 Amplified Version
7.”And without controversy great is the mystery of godliness; GOD was manifested in the flesh.” 1 Timothy 3:16 King James
8.”and Thomas answered and said to him “ My LORD and my God,” Jesus said to him :Thomas because you have seen me you have believed,” John 20:28 King James
9.”for in him dwells all the fullness of the GODHEAD BODILY,” Colossians 2:9 King James
“GODHEAD” {Greek-Theotetos}. In Thayers Greek page 288; The state of being God
10.”who although being essentially one with God and in the Form of God {possessing the fullness of the attributes which make GOD GOD} did not think this equality with God was a thing to be grasped or retained.” Philippians 2:6 Amplified version
11.”No one has seen God {referring to the Father} BUT GOD the One and Only, who is at the Fathers side has made him known.” John 1:18 New International {Jehovah GOD was seen many times by the people, so in them cases it couldn’t be the Father, {had to be Jesus who was seen and called Jehovah.
“Moses and Aaron, Nahab and Abihu, and seventy of the Elders went up and saw God of Israel under his feet was something like pavement made of sapphire, clear as the sky it self, but God did not raise his hand against these leaders of Israelites, they saw God, and they ate and drank,” Exodus 24:9-11
“at this point the men turned from there way to Sodom but as for JEHOVAH he was standing still before Abraham….then JEHOVAH went his way when he had finished speaking to Abraham.” Genesis 18:22-33 New World Translation Genesis 18:2 says three men appeared to Abraham, two are identified as angels {Genesis 19:1} ONE IS IDENTIFIED AS JEHOVAH GOD Genesis 18:1,3,13,14,17,20,22,26,27,31,32 and 33
Genesis 19: 27
Now Abraham got up early in the morning and went to the place where he had stood before Jehovah
Exodus 6:2 Then God said to Moses: “I am Jehovah. 3 And I used to appear to Abraham, Isaac, and Jacob as God Almighty, but with regard to my name Jehovah I did not make myself known to them.
Numbers 12: 6 He then said: “Hear my words, please. If there was a prophet of Jehovah among you, I would make myself known to him in a vision, and I would speak to him in a dream.+ 7 But it is not that way with my servant Moses! He is being entrusted with all my house. 8 Face-to-face* I speak to him, openly, not by riddles; and the appearance of Jehovah is what he sees. Why, then, did you not fear to speak against my servant, against Moses?”
Psalm 102:So that the name of Jehovah will be declared in Zion And his praise in Jerusalem, 22 When the peoples and kingdoms Gather together to serve Jehovah.+ 23 He prematurely robbed me of my strength; He cut short my days. 24 I said: O my God, Do not do away with me in the middle of my life, You whose years span all generations. 25 Long ago you laid the foundations of the earth, and the heavens are the work of your hands. 26 They will perish, but you will remain; just like a garment they will all wear out. Just like clothing you will replace them, and they will pass away. 27 But you are the same, and your years will never end. 28 The children of your servants will dwell securely, And their offspring will be firmly established before you.
Hebrews 1: But when he again brings his Firstborn+ into the inhabited earth, he says: And let all of Gods angels do obeisance to him. 7 Also, he says about the angels: He makes his angels spirits, and his ministers*+ a flame of fire. 8 But about the Son, he says: God is your throne+ forever and ever, and the scepter of your Kingdom is the scepter of uprightness. 9 you loved righteousness, and you hated lawlessness. That is why God, your God, anointed you+ with the oil of exultation more than your companions. 10 And: At the beginning, O Lord, you laid the foundations of the earth, and the heavens are the works of your hands. 11 They will perish, but you will remain; and just like a garment, they will all wear out, 12 and you will wrap them up just as a cloak, as a garment, and they will be changed. But you are the same, and your years will never come to an end.Under the footnote in verse 12 in New World foundation says this comes from Psalms 102 where it is a reference to Jehovah .
the biblical use of the word "firstborn" is most interesting. It can mean the first born child in a family (Luke 2:7), but it can also mean "pre-eminence." In Psalm 89:20, 27 it says, "I have found David My servant; with My holy oil I have anointed him...I also shall make him My first-born" (NASB). As you can see, David, who was the last one born in his family was called the firstborn by God. This is a title of preeminence.
Gen. 41:51-52, "And Joseph called the name of the first-born Manasseh: For, said he, God hath made me forget all my toil, and all my fatherï's house. And the name of the second called he Ephraim: For God hath made me fruitful in the land of my affliction" (NASB)
Jer. 31:9, "...for I am a father to Israel, and Ephraim is My firstborn (NASB)."