How to express condolences after the death of friends' parents?

My friend's mother died, and there are some comforting messages:

1, I'm sorry for your loss. Don't be too sad. Take care of yourself.

2. Birth, aging, illness and death are natural laws, and death is her ultimate law. Don't be too sad.

When the reality cannot be changed, we can only learn to be strong, blossom and fall, and everything in the world has a beginning and an end, which is a natural law. Please don't be sad, life goes on.

4, life and death, natural law! Don't be too sad, he will feel your filial piety!

I feel sorry for your loss. Now we should sincerely wish the deceased a pleasant journey and rest in Jiuquan!

6. Birth, old age, illness and death are the most common things. People can't be resurrected after death. Everyone who is alive should live well, otherwise the old man will not rest in peace.

7. Don't be too sad when the person you love dies. In heaven, he won't be as depressed as you are. Cheer up and work hard for the person you love.