Justin Bieber’s father, Jeremy Bieber, is celebrating the birth of his son’s first baby with his wife, Hailey Bieber.

On Saturday, the pop star’s dad posted on X, formerly called Twitter, to share a brief reaction to the couple welcoming their son, Jack Blues Bieber, just a day before.

“Papa,” he wrote, seemingly shouting out the “Baby” crooner’s newly minted fatherhood status.

Justin Bieber’s mom, Pattie Mallette, also posted her reaction to the heartwarming news.

″😭😭😭😭😭😭 🥹🥹🥹🫠🫠🫠 🙌🙌🙌🙌🙌🙌 CONGRATULATIONS @justinbieber & Hailey,” she wrote on X. “I LOVE YOU FOREVER BABY JACK!!”

Hailey Bieber’s dad, Stephen Baldwin, echoed their excitement by reposting Mallette’s message, adding, “Amen🙏🏽Congratulations to you and may God continue to bless our family.”

On Friday, Justin Bieber announced the arrival of his and Hailey Bieber’s baby boy in an Instagram post.

“Welcome Home Jack Blues Bieber,” he wrote in all-caps in the post’s caption, alongside an adorable photo of his son’s foot.

In May, the Biebers confirmed their pregnancy in an Instagram video that appeared to show the duo renewing their wedding vows.

The “Peaches” singer previously gushed about his plans to become a dad.

“I am going to have as many [babies] as Hailey is wishing to push out. I’d love to have myself a little tribe,” he said during a 2020 appearance on “The Ellen DeGeneres Show.”

“But, yeah, it’s her body and whatever she wants to do,” he added. “I think she wants to have a few.”