My sincere condolences to the family for the loss of your loved one.
2 Corinthians 1:3,4 says that God is the "Father of all tender mercies and a God of comfort." He has the power to remove death forever and will bring many who have already died back to life (Isaiah 25:8, 26:19)
to a restored paradise earth (Psalms 37:9-11,29) jw.org