"19 Kids and Counting" stars Jill Dillard and Jessa Seewald honored their father, Jim Bob Duggar, and individual husbands in a series of sweet Instagram photos published on Father's Day.

On Sunday, Jill Dillard, 24, uploaded a photo of her husband, Derick, cuddling with their infant son, Israel David, who was born on April 6th.

She captioned the photo, "Happy Father's Day to@derickdillard the sweetest hubby in the whole world! You are such a great role model of godly character to our son! I'm blessed beyond measure!#loveyouforever#FathersDay#derickdillard#IsraelDavidDillard

Jill also shared a photo of her father, Jim Bob Duggar, holding Israel David, along with the caption: "Happy #FathersDay Daddy! I am so blessed to have you as my dad and such a great example of Godly, humble leadership! I love you SO much!"

She then published a Biblical passage from Deuteronomy, which discusses the role of fatherhood, and a quote from evangelist Billy Graham: "A good father is one of the most unsung, unpraised, unnoticed, and yet one of the most valuable assets in our society."

Jessa Seewald, 22, also took to Instagram to honor her husband, Ben Seewald, whom she married on November 1st. The young couple is expecting their first child around the same time this year.

The soon-to-be mom posted a sweet picture of herself and her husband along with the caption, "Happy 1st Father's Day to my man, @ben_seewald! You're already such a good daddy, caring for your preborn baby! You're my #1 cheerleader when it comes to making good food choices, but you also understand when the baby "needs" a late-night bowl of cookies and cream ice cream! Thanks for all the back rubs, breakfast in bed, and for encouraging me to stick with those pregnancy workouts! You're the best! So blessed to have you as my husband and the father of our baby."

Like her older sister, Jessa also posted a touching tribute to her father, Jim Bob Duggar.

"Happy Father's Day to the best dad ever!" she captioned a photo of the Duggar patriarch. "You're such an awesome example of what a man should be -- seeking after God, lover of your wife, caring and affectionate towards your kids, & always looking for ways to serve God and have fun as a family! So blessed to have you as my Daddy!@ben_seewald and I can't wait for our baby to meet you! You're such an awesome grandpa too!"

Meanwhile, the sisters spoke at the ALIVE Christian Music Festival on Saturday, marking the first time they have appeared in public since the news broke that their older brother, Josh, "inappropriately touched" five underage girls as a young teen.

While the sisters never directly addressed the scandal, People Magazine notes that Jill did say that one of the messages of their hit TLC show is that their family is from from flawless.

"Hey we're not a perfect family, we mess up," she told the crowd during a Q&A-style session on the festival's Beach stage. "Imagine what life is like with a family with two or three kids and multiply that about 10 times over and that's what you get."

During the conference, Jill, Jessa and their husbands also discussed their Christian faith, marriage and children.

Speaking to the crowd gathered in Mineral City, Ohio, Derick revealed that God prepared him to be a father for many years.

"I was actually the mascot in college, so at birthday events, events for little kids, I'd have kids climbing all over me and so I kind of felt the same way whenever I'd go over to the Duggars' house before we got married, when we were courting," he revealed.

"It was kind of the same, but now ... you don't have a giant head on," Derick joked.

However, he clarified: "Nothing quite explains it like it is actually to deal with. You can't fully prepare unless you actually become a parent."