I don't want to accept my late father's greeting card that was for me.
Oh my, was there something wrong with the card? Did it upset you?
I didn't have a good relationship with him.
That's too bad that you didn't have a good relationship. Maybe accept the card and look at it when you feel you're ready to deal with your feelings about him.
I am deeply hurt by him.
It's very difficult to process feelings like that and I'm sure you're struggling with that. Try to take the time that you need to heal and process your thoughts about your relationship.