What is the object of our coming into existence

Joseph Smith said,

“What is the object of our coming into existence then dying and falling away to be here no more? This is a subject we ought to study more than any other, which we ought to study day and night… If we have any claim on our heavenly father for any thing it is for knowledge on this important subject (Words of Joseph Smith: The Contemporary Accounts of the Nauvoo Discourses of the Prophet Joseph).”

Source: http://spiritualcrusade.blogspot.com/2017/04/hope-in-christ.html