Miles's leap of faith is teased throughout the film, and comes to a head with the "What's Up, Danger" segment. Miles leaps from the building, glass coming with his fingers - he's afraid, but does it anyway. This leap of faith is embodied in the script's note: Miles isn't falling through frame. He's RISING. This is his apotheosis, the moment where he stops simply being Miles Morales and turns into Spider-Man. Through everything he's suffered - the pressure of school, the growing rift between him and his father, the agony of being a new Spider-Man - he's shrunken away from it in an attempt to be normal. The first attempt at the leap of faith affirms this, where he goes down the stairs, then tries on a smaller building, only to fail. Through the grief of losing Uncle Aaron, Miles pushes past this hesitance to be Spider-Man. The leap of faith, where he ascends to being Spider-Man after the altar is wet with Aaron's blood, allows him to fully realize himself. There's also some musical ascension going on, as the film uses Miles's motif (three rising notes) during the "What's Up, Danger" scene that is not present in the song itself.