Condolence: I am so sorry to hear of your great loss.
Recently I lost my dear mother, and found great
comfort in the Holy Bible, like at Isaiah 25
verse 8 - "The Sovereign Lord will swallow up
death forever, and wipe away the tears from
all faces." Also at Revelation 21 verse 4,
we find God's promise to remove both pain
and death. I hope these verses will give you
a measure of comfort during your time of grief.