Jessa (Duggar) Seewald welcomed a son Thursday

By Michele Corriston
Updated November 11, 2015 05:25 PM
Credit: Courtesy Ben Seewald

Jessa Duggar Seewald is opening up about her firstborn – and why she was rushed to the ER following a dramatic two-day labor. Subscribe now for this Duggar baby exclusive, only in PEOPLE!

Make way for the next generation of Duggars.

Jessa (Duggar) Seewald‘s newborn met her sister Jill (Duggar) Dillard’s 7-month-old son Israel via video chat Wednesday.

“Izzy got to FaceTime his cousin today!” Jessa’s husband Ben Seewald tweeted along with a screenshot of the babies’ adorable interaction.

Jessa, 23, and Ben, 20, welcomed their first child, a boy, last Thursday.

“I can’t believe he’s really ours,” the TLC reality star tells PEOPLE in this week’s cover story. “It is so amazing. He’s a miracle.”

Jill, husband Derick Dillard and baby Israel live far from her expansive family’s home state of Arkansas while they are on a mission trip in Central America, but they still sent their well wishes to Jessa and Ben.

“Y’all are great parents already! May you raise this little guy in the love and admonition of our Lord,” Derick, 26, wrote on Instagram last week. “May you raise this little guy in the love and admonition of our Lord.”

For much more on Jessa and Ben Seewald – including exclusive photos of their son, a glimpse into their lives as new parents and their plans for baby number two – pick up this week’s issue of PEOPLE, on newsstands Friday