A brother is an equal sibling, who shares the same parent as you. Right? Yes.
So in order for there to be brothers, there has to be more than two children coming from the same parent, right? Yes.
When the children exist as brothers, does the parent become obliterated? No, of course not.
Does the fact that there are brothers, overthrow and undermine and attack the parent's existence? Not at all, especially given the parent created the brothers.
Who is the ultimate parent? Is it not God? Right? God is the creator parent of all that is.
If God is your parent, and you have brothers, your brothers are God's EQUAL children, right? Yes of course. If there is more than one son, then God's children are brothers.
If the term "brother" is NOT tied to God, then who is the parent of the brothers? Is it the ego? Is the ego your daddy? That would have to be true, because if God is not the parent God's opposite must be. Which is ridiculous.
How about God's supposed "one son". Are you are CHILD OF the one son? If you were, you and your brother would indeed be brothers. The one son is real, therefore so too are the brothers, because a real parent can only create real children. Just as an illusory parent creates illusory children.
How about we say your parent is the ego, and therefore you and your brother must be egos. This makes "brother" into a synonym for "the ego". And that means when the ego is gone, the brothers cease to exist at all. ie they are imaginary brothers. Or their brotherhood is a temporary illusion. And when undone, BOTH DISAPPEAR, leaving no child at all!
If that is true, then we MUST be claiming that, as ego brothers, who exist only due to "the separation", we have the ego as our creator. The ego must be the parent of whatever the brothers are. And brothers can't be brothers without a shared parent.
Nowhere in ACIM does it EVER say, that brothers are the children of the ego. Never. And it would be ridiculous to do so.
It DOES SAY, many times over, that brothers are children of GOD. And what that has to mean is, that God MUST not only have multiple children, but also that brothers is a term for REAL created beings who are permanent, not children of the ego, and not children of the separation.
So in ACIM, every reference to "your brother", is talking about THE SOULS that God created, who are many in number, necessarily more than ONE, and AT LEAST TWO, so that they can BE brothers, and share the same parent who is God.
And because God is a REAL parent, his children MUST be real as well. Meaning that, ... unless brother means "son of the ego", brother MUST mean REAL CHILDREN in reality, in heaven, with God, many in number. ie God has multiple sons.
This is simple enough accurate reasoning. Either your brother is a child of the devil or he is a child of God along with you. And you'll be very hard pressed to find references in the course to your brother being anything less than holy, innocent, divine, a co-creator with God, and your total equal IN HEAVEN.
"Brother", therefore, in ACIM, refers solely to the SOULS in heaven that have eternal life, ***are many in number***, and who share the same parent - God. And this automatically means God has many sons, not just one in number.
Jesus even states on multiple occasions that your brother is a CO-CREATOR with you and with God. Which is only possible in heaven, therefore making brothers permanent real beings, a heavenly multitude, the sum of which we call "the sonship". Aka. "God's family."
"Will you behold your brother? God is glad to have you look on him."
"Heaven is the home of perfect purity. And God created it for YOU. Look at your holy brother, sinless as yourself, and let him lead you there."
"Perhaps you come in tears, but hear Him say, "My brother, Holy Son of God, behold your idle dream, in which this could occur," and you will leave the holy instant with your laughter and your brother's JOINED with His."
"You could no more know God alone, than He knows YOU without your brother."
"Whenever you heal a brother by recognizing his worth, you are acknowledging his power to create and yours."
"And therein lies your need to see your brother sinless. In him is Heaven."
"It is impossible to over-estimate your brother's value. Only the ego does this."
"The Son of God extends his hand to reach his brother, and to help him walk along the road with him."
"For you will realize that the ONLY value that the body has, is to enable you to bring your brothers TO the bridge WITH you. And to be RELEASED TOGETHER there."
"You will not remember that you are co-creator with God, until you learn that your brother is a co-creator with YOU."
"You do not know YOUR creations, because you do not know your brothers who created them with you."
"When the Atonement is complete and the whole Sonship is healed, there will be no call to return, but what God creates is eternal. The Holy Spirit will remain with the Sons of God, to bless THEIR creations and keep them in the light of joy."