Is faith in the atonement of Jesus Christ written on our hearts?

Today was the first Sunday of the month which meant I received a Relief Society newsletter. Our RS president shared the following short excerpt from a message Linda Burton, General Relief Society President, gave at the General Women's Meeting that I missed (because I was in a car headed to Canada):

A few years ago, Elder Jeffrey R. Holland shared his feelings about the deep-rooted faith of pioneers who pushed forward to the Salt Lake Valley even after the deaths of their children. He said, "They didn't do it for a program, they didn't do it for a social activity, they did it because the faith of the gospel of Jesus Christ was in their soul, it was in the marrow of their bones."

"That’s the only way those mothers could bury [their babies] in a breadbox and move on, saying, 'The promised land is out there somewhere. We’re going to make it to the valley.' They could say that because of covenants and doctrine and faith and revelation and spirit."

He concluded with these thought-provoking words: "If we can keep that in our families and in the Church, maybe a lot of other things start to take care of themselves. Maybe a lot of other less-needed things sort of fall out of the wagon. I'm told those handcarts could only hold so much. Just as our ancestors had to choose what they took, maybe the 21st century will drive us to decide, 'What can we put on this handcart? It's the substance of our soul; it's the stuff right down in the marrow of our bones.' Or, to put it another way, it is what is written in our hearts!