However, Jack's soul had burned out and his actions caused the others to worry on his condition. When Jack killed Mary Winchester, he sought to redeem himself by creating new angels but it didn't help and he was locked away by the Winchesters.
He wishes it didn't happen. Dean is barely holding it together. He doesn't like that Jack is calling Mary's death, “the accident.” But he plays along and says they understand and they forgive Jack.
Supernatural 15x13 - Jack gets his soul back and says sorry to Sam and Dean for killing Mary! - YouTube.
After a soulless Jack kills Nick for trying to resurrect Lucifer, he accidentally kills Mary in a brief fit of rage. Mary is reunited with her husband in Heaven and is now at peace in a shared Heaven with John.
Jack finally returns to Earth in Supernatural season 15, and reveals the plan he and Billie hatched to help Sam and Dean Winchester defeat God.
After death, Jack's soul was able to go to Heaven like a regular human, though his half-angel nature allowed him to sense the true nature of his Heaven and leave it.
It is eventually revealed that Jack's soul really is gone since killing Michael and he has lost much of his morals as a result. Jack brutally killed Nick for trying to resurrect Lucifer, instead of doing it in a more painless way and in a moment of anger, lost control and accidentally killed Mary Winchester.
It is revealed that she was killed because she interrupted the demon as he fed his blood to baby Sam. Sam learns for the first time that he was fed demon blood, and that Mary knew the demon that killed her.
Jack killed Mary by smiting, which is directed heavenly power, which is supposed to obliterate the body on a molecular level and the body is irreparably unusable except as a vessel. And as Castiel said, Mary is in perfect peace, a soul in such a state cannot be returned to its reformed body.
Ultimately, Mary was sacrificed in order to set up Supernatural's ending. Killing the Winchesters' mother creates tension between Jack and the brothers, and this in turn helps reveal the true villain of the entire series to be God.
"No Rest For The Wicked" (Season 3, Episode 16)
The shortest season of Supernatural brought with it one of the most graphically heartbreaking season finales. After selling his soul the previous year to save Sam, Dean's time is up, and the hellhounds have come to collect.
Though he was resurrected a second time with no soul, Jack's soul was subsequently restored by the Garden of Eden after he journeyed to it through the Occultum. Lily Sunder agrees to help resurrect Jack using her magic, but tells Sam, Dean, and Castiel that it will use part of his soul in process.
Emma was an Amazon conceived by Lydia and Dean during a one-night stand, unbeknownst to the latter. After trying to kill Dean, Sam shot her, killing her instantly.
Dean left Chuck alive and powerless, to grow old and die and fade to nothing. Forgotten like all the humans he'd abandoned. It was poetic. And it left Jack as the new God, in harmony with the Darkness and present in every person and thing on earth.
Jack uses his powers to heal Cas because the antidote obtained via the best plan of all time unfortunately doesn't work. When he tries to also heal Dean, though, Cas won't let him; he's confident Dean will heal (because he's Dean, and Dean is Dean) and Jack is being entirely too cavalier about his soul.
In Let the Good Times Roll, Lucifer extracted most of Jack's grace with an archangel blade, leaving him completely powerless. Although it was revealed in Stranger in a Strange Land that Jack's Grace will slowly recharge, as of now, Jack has not regained any of his powers.
Billie resurrected Jack and sent him to Earth to feed on Grigori hearts in an effort to make him stronger so that eventually he'll be able to fight Chuck.
After he was shot and killed by a Dalek, Jack was revived by Rose Tyler, who at the time was transformed into a nearly omnipotent being. Unable to control her powers, she accidentally turned him into an immortal being.
Mary was killed a few months after Sam was born in 1983. If you do the math, Dean is 37, Sam is 33, and due to the wiki Mary died at age 29.
When Sam was six months old, his mother Mary (a retired creature hunter) was engulfed in a massive conflagration by yellow-eyed demon Azazel (one of four Princes of Hell).
Her Age. Because she is the mother of two grown men, it's easy to forget that Mary herself was only 29 years old when she was killed by Azazel; thus, she really only had the experience of a 29-year-old when she was resurrected, though she would have been in her 60s.
In The End, Jack Became A “Hands-Off” Deity
He was more powerful than God and Amara together. He put the whole world to rights but didn't bring back all the people that had died because of his plan.
Dean and Jack's relationship resemble that of Dean's relationship with his own father. This is further seen, as Jack is considered by many characters to effectively be Sam and Dean's son, though Mary Winchester also called Jack her son in Unfinished Business.
Yes, Handsome Jack is evil, but part of the reason why he is such a successful villian is because he did, at some point, have a purpose behind his actions. He hates bandits, and he finds others untrustworthy, especially Vault Hunters.