John 11:11-14
(11) These things said he: and after that he saith unto them, Our friend Lazarus sleepeth; but I go, that I may awake him out of sleep.
(12) Then said his disciples, Lord, if he sleep, he shall do well.
(13) Howbeit Jesus spake of his death: but they thought that he had spoken of taking of rest in sleep.
(14) Then said Jesus unto them plainly, Lazarus is dead.
John 11:25-26
(25) Jesus said unto her, I am the resurrection, and the life: he that believeth in me, though he were dead, yet shall he live:
(26) And whosoever liveth and believeth in me shall never die. Believest thou this?
Ecclesiastes 9:5-6
(5) For the living know that they shall die: but the dead know not any thing, neither have they any more a reward; for the memory of them is forgotten.
(6) Also their love, and their hatred, and their envy, is now perished; neither have they any more a portion for ever in any thing that is done under the sun.
Though people may be dead to God He does not forget them. They are alive in God even though they are dead. Instead of trying to prove doctrine we need to bring all the scripture together.