Faith plays a huge role at the home ofKanye WestandKim Kardashain West— perhaps even more so while they’re expecting.

A source tells PEOPLE that the soon-to-be parents of four “pray about”their little one on the way via surrogate“every day, as a couple.”

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Versace show, Arrivals, Pre-Fall 2019, New York, USA - 02 Dec 2018

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The insider adds that “the entire family is excited” about the new addition — particularly oldest child North, who “is thrilled that she’ll be a big sister again.”

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“It’s an interesting thing: Kanye says that North never gets jealous about new babies,” the source tells PEOPLE. “She’s almost like another little mother to them.”

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RELATED VIDEO:Kim KardashianandKanye WestExpecting Fourth Child Via Surrogate

On Sunday, Kardashian West gave her Instagram followers a behind-the-scenes peek at West leading a gospel choir through a variety of songs — including some of his own —during rehearsals for their new “Sunday Service.”

Clearly enjoying the uplifting music all around her, the couple’s youngest child, Chicago, was seen dancing around in a series of sweet clips.

In one video, the tiny tot moved her arms around while she grooved to the music, while in another, Chicago had a big smile on her face as she ran toward her mother. Ina third clip, the spouses’ daughter could be heard off camera adorably saying “Dada” over and over as she watched West lead the choir.

source: people.com