You may write: "With love and deepest condolences", "My Sincere sympathies", or "My thoughts and prayers are always with you." A guide to writing condolence letters.Includes sample letter and tips on what the author should include in their letter of condolence. Our mutual friend, XXX let me know of your bereavement. I was very sorry to hear of XXX's passing. These letters let people know that you are thinking of them and that you sympathize with what they are going through. Make sure you include the name of the person who died or mention the specific incident that caused sorrow for the person. Offer words of sympathy to someone who is grieving for the loss of a sister. Here are 15 most heartfelt condolence messages to consider. Our thoughts and prayers are with you during this difficult time.