Blood sacrifice.
Aslan
Lucy and Susan cannot untie Aslan because the magic involved in the ties is too powerful for them to break. The ties are part of a deeper magic and can only be broken by someone who is willing to sacrifice their own life in exchange for Aslan's.
Aslan must obey the laws of Deep Magic because they were set by the Emperor-Beyond-the-Sea, who is a higher authority than Aslan. The Deep Magic represents the fundamental rules of Narnia and must be followed to maintain balance and order in the world. Going against the Deep Magic would result in dire consequences.
The right by deep magic that Aslan agreed the White Witch possessed was the right to kill Edmund in order to claim him as a traitor, as stated in the laws of the Emperor-beyond-the-Sea.
The whole story! Aslan represents Jesus, the white witch represents Satan. Perhaps Edmund represents Judas Iscariot. If I had to say one event, it would be when the white witch kills Aslan. At that moment, the white witch is representing Satan, and Aslan is laying on the stone table representing Jesus on the Cross. When Aslan raises back from the dead and defeating the "old magic" (or "deep magic"), it is comparable with Jesus raising from the dead to defeat sin.
Aslan makes a sacrifice for Edmund by offering himself in Edmund's place to the White Witch, fulfilling the deep magic that demands his life for Edmund's treachery. This act of selflessness and love ultimately leads to Aslan's resurrection and the defeat of the White Witch.
Aslan's army doesn't get the witch's wand so the witch turns herself and the dwarf into a stump and boulder.
Aslan is sacrificed by the witch, but comes back to life due to the "Deeper magic", which holds that when someone who has committed no treachery willingly sacrifices himself for a traitor, death is reversed, and the martyr returns to life.
Lucy and Susan were unable to untie Aslan because the ropes used to bind him were special and magical, requiring someone with a deeper understanding of magic to untie them. The girls did not possess this knowledge or ability, which prevented them from freeing Aslan.
Oh, dude, Aslan comes back to life in Narnia because he's like this magical lion who sacrifices himself to save Edmund, and then the Stone Table cracks because of some deep magic stuff, and boom, he's back, like a majestic feline Lazarus. It's all very dramatic and symbolic, you know, typical Narnia shenanigans.
No, Aslan did not have a son.
yes,i can call my magic jack.