I am sorry to hear that your mother has died. Please accept my deepest condolences.Be sincere and express your feelings of sympathy. I am so deeply sorry for your loss. Example of a Condolence Letter. "I am deeply saddened to learn that your (mother, father, spouse, sibling, etc.) recently passed away. Please know that you have my deepest sympathy. Please accept my heartfelt condolences, and may you find comfort in the arms of those who care about you. We share in your grief and pray for peace. May your Mom rest in peace.