POCATELLO/KPVI-TV -- A Pocatello couple and their two children tragically died of carbon monoxide poisoning on Saturday. The unexpected deaths left the family's two remaining adult children suddenly without a mother and father and two brothers.

The Bannock County coroner said Bill and Ross Parrish, 14-year-old Keegan, and 12-year-old Liam died in their sleep from carbon monoxide poisonging late Saturday night.

The couple's two older children were serving as mormon missionaries when their parents and siblings died. Jensen and Ian Parrish are now speaking about their deceased family and the how they're moving forward.

Both Jensen and Ian traveled back to Idaho from their respective missions after they got the terrible news. Jensen was serving in an American Sign Language mission based out of Portland, and Ian was serving his mission in South Dakota.

It's been...honestly been kind of a numb moment, said Ian Parrish. Many times I didn't know what to think, but I can't be more grateful for the support I have. That's honestly what's been holding me up.

The brother and sister are the only two left of their six-member family, but they say they are receiving support from across Idaho, and even across the country. Their strong faith in the Church of Jesus Christ of Latter Day Saints is also helping them.

It's been hard, it's been sad, but at the same time it's been the most peaceful, spiritual experience I think I've ever had in my entire life, said Jensen Parrish.

Though their immediate family has passed away, their large extended-family is also helping the siblings cope.

Growing up I've always been close to them, said Ian Parrish. Every Sunday we come gather as a family, and growing up with that, honestly, I just didn't recognize how precious that was to me. So right now, part of this experience is that it's a time for me to recognize how meaningful the family really is.

Jensen and Ian Parrish are holding on to the values their parents taught them, and trying to exemplify the love of their family to keep the memories alive.

People knew them because of their happiness, their kindness, their love for other people, Jensen said. I knew it, but just meeting people and having people come up to us, and tell us how much they affected their lives, knowing that love they had for other people, that is how we're going to have to do it.

Funeral services for the four family members are scheduled for Friday at noon at one of the LDS Church buildings on the Idaho State University campus.

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