Jesus was sent by God (although he is God himself - figure that one out - so he sent himself?) as a sacrifice to redeem humanity for its sin.
Jesus asks God, his father, to spare him from being crucified ( although he himself is God, so he asks himself?).
Tough luck though as he doesn't escape.
So, what sin was he dying for?
The sin was the original sin that Adam and Eve committed by eating fruit from the Tree of Knowledge when in Eden. Before Jesus died for our sin we were all going to hell or maybe stuck in limbo.
Look up "limbo" for an interesting read.
https://en.wikipedia.org/wiki/Limbo
A Catholic nun where I went to school explained to us kids how to baptize our younger siblings in case they were going to die before being formally baptized so they could go to heaven and not be stuck in limbo forever and denied entrance to heaven.
As a kid I always pictured the babies floating on soft pink clouds in limbo (how the nun explained it).
Baptism became the way to be absolved from Original Sin so that you could enter Heaven.
Makes total sense.
Deserves a theological explanation
1. "God sent Himself so He asked Himself to spare Him?"
This is the oldest and most common misunderstanding of the Trinity. The Trinity is not one person wearing three hats. At the baptism of Jesus, the Father speaks from heaven and the Spirit descends as a dove all while Jesus comes out of the water. John 1:1 affirms that Jesus is God, while also being with God indicating He is a distinct Person from the Father.
Jesus prayed to God the Father without praying to Himself. It is precisely the continuing dialogue between the Father and the Son that furnishes the best evidence that they are distinct Persons with distinct centers of consciousness.
One God, three Persons. The Son's prayer in Gethsemane is not God talking to Himself it is the eternal Son, who took on human nature, expressing genuine human anguish while remaining perfectly obedient to the Father. That's not incoherent; that's the Incarnation.
2. "Jesus only died for Original Sin"
This is a significant reduction of what actually happened. The Redemption is not a narrow legal fix for one infraction. Christ's death and Resurrection reconcile humanity to God by defeating sin in all its forms original sin, personal sin, and death itself. The Catechism teaches that original sin was the personal act of disobedience of the first humans, resulting in the deprivation of original holiness and justice and the experience of suffering and death and it describes the fallen state of all human beings, including concupiscence, ignorance of God, suffering, and death. Christ came to undo all of it, not just the first bite of fruit.
3. The Limbo Question
The nun's teaching reflects a real theological tradition but it has important nuances.
Around AD 1300, the term "Limbo," from the Latin limbus meaning edge or boundary, came to be used for the dwelling place of the good or innocent dead who were not baptized.
Since unbaptized children have never committed a personal sin, they cannot be punished. Yet, without Baptism they have no grace to see the infinite God so they were understood to be in a state of happiness without sensory pain, but unable to see God. This state is called "limbo."
However and this is critical the doctrine of limbo has never been defined as dogma by the Church; it was a theological hypothesis, mostly dependent on St. Augustine's doctrine of original sin. Sacred Scripture does not expressly mention limbo.
The current Catechism of the Catholic Church contains no reference to limbo. Concerning children who die without Baptism, the Catechism says the Church can only entrust them to the mercy of God, as she does in her funeral rites for them.
The great mercy of God, who desires that all people be saved, and Jesus' tenderness toward children "Let the children come to me, do not hinder them" allows us to hope that there is a way of salvation for children who die without Baptism.
4. On Baptism
The gifts God gives in Baptism both destroy and build. When a person is baptized, all sin is destroyed both the original sin that is inherited, and any actual sins committed by that individual.
Original sin is removed in Baptism, but it still has an "effect" on us concupiscence, the inclination to sin. While Baptism removes the stain of original sin, it does not remove the inclination to future sin.
This is why Baptism is not a magic eraser but the beginning of a life of grace one that requires ongoing conversion, the sacraments, and cooperation with God.
The Real Objection Underneath
The person presenting this argument seems to assume that if something sounds counterintuitive or was taught imperfectly in a classroom, the entire faith collapses. But imperfect catechesis even by a well-meaning nun is not the same as flawed doctrine. The Trinity is admittedly the most difficult doctrine in the Christian faith. That difficulty doesn't make it false; it makes it transcendent. A God fully comprehensible to the human mind would be a very small god indeed.
My question to you (and it is my question)
. If the Trinity is incoherent simply because it exceeds our intuitions, then shouldn't the same skepticism apply to quantum mechanics, where a particle can exist in two states at once until observed something equally counterintuitive but accepted as real?