It is ok to say that this is your understanding of the scripture but don't say it is what the scripture teaches.
The light analogy does not represent God.
Is 40-55; Who of the three is speaking?
YHVH, the Triune God, is speaking.
And he refers to himself using singular pronouns.
Is 45:5 I am the LORD, and there is no other, besides me there is no God; I equip you, though you do not know me,
The capital letters represent YHVH.
As I have said, in terms of Being, God is one. In terms of Persons, God is three.
YHVH is also used to refer to the Father, as well as Jesus. As I have said, YHVH the Triune God is speaking, and there is non besides Him.
If you claim Jesus is speaking, then my question would be, does the Father exist as a distinct Person, and is he God? If you claim the Father is speaking, then my question would be, does the Son exist as a distinct Person, and is he God? You cannot answer either question without denying the deity of the Father or the Son, because this verse states there is only one God, and there is no other God.
The Trinity doctrine allows me to reconcile all of the Scriptural statements about God. Other views simply do not allow this.
The Trinity doctrine is Scriptural, and the other views are not. It is not a mere matter of my opinion. You guys might want to make such a claim so you can gain acceptance, and then attempt to gain dominance. I doubt it will work because there are tons of faithful Trinitarians who know that Scriptural statements regarding God cannot be reconciled outside of the Trinity doctrine. I have certainty that Christianity ultimately dominates over all other aberrant worldviews and false versions of Christianity.
Cultic groups don't stop there, though....they want to convince others of other false teachings. This is because, without an understanding of the Trinity, their entire belief system is in shambles and cannot be reconciled. I know this from being an anti-Trinitarian. Bad doctrines don't exist in isolation; they have a cascade effect into other areas of Christian doctrine.
Perhaps it would be helpful to identify your own position regarding God before discussing this further.