The Infancy Narrative - Only Begotten and First Born

In the old testament, only begotten and first born are used interchangeably. Luke does use monoganes to talk about the death of one's only child in different parts of his gospel. So much the same way jesus was free from original sin and personal sin, yet when he was on the cross, it's not like the nails couldn't go through his hands. The fact that mary died does not show that she had origin sin, or that she inherited riginal sin, or even committed a personal sin. All it shows is that she, even though she was free from sin, she still had human nature. And human nature is corrupted and mortal. Ah, that could