Josh Duggar's younger brother speaks out: 'I don't want to be like him'

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Anna Duggar Speaks Out on Husband Josh's Scandalous Summer

John-David and Joseph Duggar are finally breaking their silence about their older brother, Josh.

In a new clip from the upcoming three-part TLC special, Jill & Jessa: Counting On, the two siblings get emotional as they open up about the effects Josh's actions have had on their family.

WATCH: Anna and Josh Duggar Are Writing Love Letters to Each Other, Source Says

"You look at your brother and you want to think the best about him. I always wanted to be like him. But one of the toughest things I ever had to tell my older brother was, 'I don't want to be like you anymore,'" John-David, 25, says, revealing that he feels it's now his duty to be the new role model as the second eldest Duggar brother.

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Josh Duggar's younger brother speaks out: 'I don't want to be like him'
NEW YORK, NY - MARCH 11: Josh Duggar visits 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NATIONAL HARBOR, MD - FEBRUARY 28: Anna Duggar and Josh Duggar pose during the 42nd annual Conservative Political Action Conference (CPAC) at the Gaylord National Resort Hotel and Convention Center on February 28, 2015 in National Harbor, Maryland. Conservative activists attended the annual political conference to discuss their agenda. (Photo by Kris Connor/Getty Images)
NEW YORK, NY - MARCH 11: Hilaria Baldwin (R) interviews Josh Duggar and his daughter during their visit with 'Extra' in Times Square on March 11, 2013 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NATIONAL HARBOR, MD - FEBRUARY 28: Josh Duggar speaks during the 42nd annual Conservative Political Action Conference (CPAC) at the Gaylord National Resort Hotel and Convention Center on February 28, 2015 in National Harbor, Maryland. Conservative activists attended the annual political conference to discuss their agenda. (Photo by Kris Connor/Getty Images)
NATIONAL HARBOR, MD - FEBRUARY 28: Anna Duggar and Josh Duggar pose during the 42nd annual Conservative Political Action Conference (CPAC) at the Gaylord National Resort Hotel and Convention Center on February 28, 2015 in National Harbor, Maryland. Conservative activists attended the annual political conference to discuss their agenda. (Photo by Kris Connor/Getty Images)
NATIONAL HARBOR, MD - FEBRUARY 28: Anna Duggar and Josh Duggar pose during the 42nd annual Conservative Political Action Conference (CPAC) at the Gaylord National Resort Hotel and Convention Center on February 28, 2015 in National Harbor, Maryland. Conservative activists attended the annual political conference to discuss their agenda. (Photo by Kris Connor/Getty Images)
NEW YORK, NY - MARCH 11: Hilaria Baldwin (R) interviews Josh Duggar and his daughter during their visit with 'Extra' in Times Square on March 11, 2013 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
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"It's a big load. It's a big weight upon me now," he shares. "I've got a whole bunch of younger siblings looking up to me, and I've got to be an example to them. Because whatever I am, that's what they want to be. I know that's what it was for me and Josh."

John-David explains that just as "everything started to settle down" from Josh's first scandal -- in which the 27-year-old admitted in May to molesting five minor girls, including four of his sisters, when he was a teenager -- the family "got word of a second thing that we had no clue about."

WATCH: EXCLUSIVE: The Duggar Family Has Been Sending Notes to Josh

"That was a little more of a shock probably than the first stuff coming out," he says about discovering Josh had been "unfaithful" to his wife, Anna, during the Ashley Madison hack. The father of four also admitted to a pornography addiction in August.

Joseph, 20, claims that the family had no idea Josh was "living such a secret life."

"Whenever somebody you respect the most is willing to get up and proclaim what we believe as Christians, about being true to your wife, you'd never expect that person to be the one that's involved in it," he says. "It broke my heart."

WATCH: Anna Duggar Speaks Out About Husband's Cheating Scandal for the First Time

While the family dynamic has drastically changed over the years, Joseph says that growing up, he tried to get past his brother's wrongdoings.

"Even after the first thing that came out when he was younger, I never had quite as close of a relationship as I did whenever I was really young," Joseph reveals, holding back tears. "But over time, it's built back up. But then whenever this next situation came up, it blew my mind. I had no idea."

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Josh Duggar's younger brother speaks out: 'I don't want to be like him'
TODAY -- Pictured: (l-r) Michelle Duggar and Jim Bob Duggar appear on NBC News' 'Today' show (Photo by Peter Kramer/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - MARCH 11: AJ Calloway (C) poses with (L-R) Jessa Duggar, Jinger Duggar, Jill Duggar, and Jana Duggar during their visit to 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
TODAY -- Pictured: (l-r) Michelle Duggar, Jim Bob Duggar and Kate Upton appear on NBC News' 'Today' show (Photo by Peter Kramer/NBC/NBCU Photo Bank via Getty Images)
TODAY -- Pictured: (l-r) James Duggar, Michelle Duggar and Matt Lauer appear on NBC News' 'Today' show (Photo by Peter Kramer/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - MARCH 11: Josh Duggar visits 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: (R-L) AJ Calloway and Hilaria Baldwin interview Josh Duggar and his daughter during their visit with 'Extra' in Times Square on March 11, 2013 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: Hilaria Baldwin (R) interviews Josh Duggar and his daughter during their visit with 'Extra' in Times Square on March 11, 2013 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
Two weeks ago I married my best friend! 😘 I love you, Darling! @ben_seewald
It's great living life with your best friend! @ben_seewald
We're expecting!!! So grateful to God for this new little blessing!!! #babydilly #firsttimeparents #sogratefultoGod #derickdillard #jillmdillard
We enjoyed a wonderful family dinner at the Bradford Inn! #familyvacation2014 #19kids #branson
Met Duck Dynasty's Allen & Lisa Robertson tonight!
WASHINGTON, DC - FEBRUARY 10: A view of the book 'A Love That Multiplies' during the Conservative Political Action Conference (CPAC) at the Marriott Wardman Park on February 10, 2012 in Washington, DC. (Photo by Kris Connor/Getty Images)
NEW YORK, NY - OCTOBER 23: Jill Duggar Dillard (L) and husband Derick Dillard visit 'Extra' at their New York studios at H&M in Times Square on October 23, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - OCTOBER 23: (L-R) AJ Calloway interviews Jill Duggar Dillard and husband Derick Dillard during their visit to 'Extra' at their New York studios at H&M in Times Square on October 23, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
GOOD MORNING AMERICA - One of America's largest families, the Duggars, talk about their new book on GOOD MORNING AMERICA, 3/11/14, airing on the ABC Television Network. They are pictured in GMA's Social Square with Dan Harris. (Photo by Ida Mae Astute/ABC via Getty Images) DUGGAR FAMILY, DAN HARRIS
NEW YORK, NY - MARCH 11: The Duggar family visits 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: The Duggar family visits 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: AJ Calloway (L) interviews the Duggar family during their visit to 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
WOODBRIDGE, VA - OCTOBER 16: Reality telvision celebrities, Jim Bob Duggar, center, and his wife, Michelle Duggar make a stop on their 'Values Bus Tour' outside Heritage Baptist Church on Wednesday October 16, 2013 in Woodbridge, VA. (Photo by Matt McClain/ The Washington Post via Getty Images)
NEW YORK, NY - MARCH 11: The Duggar family visits 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: The Duggar family visits 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: The Duggar family visits 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: The Duggar family visits 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: (L-R) Jessa Duggar, Jinger Duggar, Jill Duggar, and Jana Duggar visit 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: AJ Calloway (L) poses with Jim Bob Duggar (R) and wife Michelle Duggar during their visit to 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
NEW YORK, NY - MARCH 11: Hilaria Baldwin (R) interviews Josh Duggar and his daughter during their visit with 'Extra' in Times Square on March 11, 2013 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
TODAY -- Pictured: The Duggar Family appears on NBC News' 'Today show (Photo by Peter Kramer/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - MARCH 11: AJ Calloway (L) interviews the Duggar family during their visit to 'Extra' at their New York studios at H&M in Times Square on March 11, 2014 in New York City. (Photo by D Dipasupil/Getty Images for Extra)
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Earlier this week, a source told ET that despite their marital drama, Anna has been writing letters to her estranged husband, who entered a faith-based rehab facility in late August.

"Anna is planning on getting back together with Josh, that's just how it goes," the source said. "The family was taught to have a new level of forgiveness towards Josh."

WATCH: Anna Duggar Was in Disbelief Over Husband's Infidelity Scandal

ET previously reported that while not all members of the Duggar family were on board, a few of them were sending notes of "encouragement" and "forgiveness" to Josh.

In anticipation of the Jill & Jessa: Counting On premiere airing Sunday at 8 p.m. ET on TLC, watch the video below to hear more.

Jill and Jessa Duggar Tear up over Brother Josh's Scandals




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