J. Golden Kimball | The Spirit of God is Necessary to Survive

The full talk can be read here:
https://ia902705.us.archive.org/34/items/conferencereport1918sa/conferencereport892chur.pdf

The Book of Mormon is available freely. A free printed copy can be obtained from here:
https://www.churchofjesuschrist.org/comeuntochrist/chuuk/form/order-book-of-mormon

A digital copy of the Book of Mormon, as a phone application, can be found here:
https://go.churchofjesuschrist.org/bookofmormonapp