Charlie Hunnam
Cast member Charlie Hunnam speaks at a panel for the television series ''Sons of Anarchy'' during the FX portion of the Television Critics Association Summer press tour in Beverly Hills, California August 2, 2013. Reuters/Mario Anzuoni

After a series of ominous teasers, FX "Sons of Anarchy" finally released the first season 7 official trailer with Jax (Charlie Hunnam) vowing to avenge his wife's brutal murder as he asks his motley crew if they are willing to die for the club. The newly released trailer also features the incarcerated SAMCRO president beating a fellow inmate, the scene is included in the opening montage during the show's 90-minute season 7 premiere.

"The desire for revenge is a part of grieving," says DA Patterson to Jax who is back in prison due to parole violation at the opening of the trailer. "In my world, violent desires will never become real. In yours, it's a very likely outcome."

"Jax in jail on a parole violation, grappling with the loss of the woman he loved. With the club's full support, he sets in motion the brutal machinations that will lead to complete and merciless retribution," according to TV Line.

Jax losing Tara (Maggie Siff) will drive him to the edge where he will become his worst enemy as he haunts for her fork murderer. Series creator Kurt Sutter previously revealed that episode seven of the upcoming season will be an explosive game changer. Fans of the show are speculating that this could the episode where Jax finds out that his own mother, Gemma Teller (Katey Sagal) that she is the one responsible of his wife's murder.

The rest of the trailer shows Jax getting out of the jail and back at the Reaper table where he ask his gang member, "I need to know that every single one of you would die for the man next to him." Chibs (Tommy Flanagan) then said in response to Jax's question, "We're all in brother."

Helping Gemma disposed the evidence for Tara's murder and killing Sheriff Eli Roosevelt did not help Juice in securing his ties with SAMCRO. Now he is on the run, alone in hiding as he doesn't know what Jax would do to him if he finds out. While Gemma is trying to keep her secret away from her son for she believes that, "Keepin' our truth away from him is the right thing to do."

"Sons of Anarchy" season 7 is scheduled to premiere on Sept. 9 for its fall premiere.