'Dead' in the Bible

"You [are] children of Yahweh your God; [therefore] you must not gash yourself, and {you must not make your forehead bald} for [the] dead.

or one who casts magic spells, or one who consults spirit of the dead, or spiritist, or one who inquires of the dead.

his dead body shall not hang on the tree, but certainly you shall bury him on that day, for cursed by God [is] one that is [being] hung; so you shall not defile your land that Yahweh your God [is] giving to you [as an] inheritance."

And then the firstborn that she bears {shall represent his dead brother}, so that his name is not blotted out from Israel.

And your dead bodies shall be as food for all of the birds of the heaven and to the animals of the earth, and there shall not be {anyone to frighten them away}.