Death is so unfair. The scriptures tell us that death is “the last enemy” to be brought to nothing at 1 Cor 15:26. In the meantime, may your family find comfort in God’s words at Rev 21:4 that says, “And he will wipe out every tear from their eyes, and death will be no more, neither will mourning nor outcry nor pain be anymore. The former things have passed away”. To find satisfying answers to your bible questions jw.org is a great help.