Greetings: I'm very sorry for your loss. I went through a similar situation and I was very helped by the hope that I found in the Bible in John 5:28, which says, "Do not amazed at this, for the hour is coming in which all those in the memorial tombs will hear his voice and come out". I am sending you a link with more information on this hope.
A pray for your family asking our Heavenly Father, JehovahGod.
to give you the comfort you need found in His words at
2 Corinthains 1:3,4 and remember the hope we have in the
fulfillment of His promise in Acts 24:15 of the resurrection. With
my sincere condolences.