Speaking of jesus:
PHIL 2:6 WHO BEING IN THE MORPHE (SHAPE) OF GOD THOUGHT IT NOT ROBBERY TO BE EQUAL WITH GOD…
Jesus is in the shape of god therefore as confirmatory, Jesus and god has same shape. Having the same shape thus they have same nature. They are equally god as they have one nature like man is equally human being as they have the same nature.
Mankind has same nature. Jesus and god have equal shape.
Speaking of jesus:
Who being the brightness of his glory, and the CHARAKTER (EXACT COPY) of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high;
Shape implies their integral form. If they have blood cells, or DNA or skull or brain cells etc… the integral shape of these– or whatever Jesus and god’s natural form is–is equal between god and Jesus thus naturally, they are equal in their natural state as God.
Therefore Jesus and god has one spirit nature. The shape of their spirit form are equal. Thus they are one god. Equal in nature.
GOD IS GREATER THOUGH THAN JESUS BUT THAT IS IN ASPECT OF AUTHORITY WHEREAS IN NATURE THEY ARE EQUAL.
1 Corinthians 11:3
But I would have you know, that the head of every man is Christ; and the head of the woman is the man; and the head of Christ is God.
Verily, verily, I say unto you, The servant is not greater than his lord; neither he that is sent greater than he that sent him.
Ye have heard how I said unto you, I go away, and come again unto you. If ye loved me, ye would rejoice, because I said, I go unto the Father: for my Father is greater than I.
For example, in a family, the father is greater than his children in terms of authority but in nature, they are equally human beings likewise, god is greater than Jesus in authority but in nature, they are equally God–
That as preferential, much so contextual, makes them one god. Like man has same nature thus they are called mankind–one, singular and collective. Jesus and god almighty have equal nature thus they are called god–one, singular and collective. Much so, as expressed that being two individual person they are one collective god as indicated:
Thou believest that there is one God; thou doest well: the devils also believe, and tremble.