You are a spirit child of Heavenly Father, and you existed as a spirit before you were born on the earth. During your life on the earth, your spirit is housed in your physical body, which was born of mortal parents.
From the scriptures, we learn about the nature of spirits. We learn that “all spirit is matter, but it is more fine or pure, and can only be discerned by purer eyes” (D&C 131:7). We read that “the spirit of man [is] in the likeness of his person, as also the spirit of the beast, and every other creature which God has created” (D&C 77:2; see also Ether 3:7–16).
The scriptures also teach that at the time of physical death, the spirit does not die. It separates from the body and lives in the postmortal spirit world. At the time of resurrection, the spirit is reunited with the body, “never to be divided; thus the whole becoming spiritual and immortal” (Alma 11:45).