I feel sorry that your father's illness required surgery during the near Christmas, and you may not celebrate together, everyone in my family, but I look forward to your father's illness, ASAP.
I feel sad that your father patients must undergo surgery in the near Christmas, and you may not have celebrated together every family, but I hope very much to your father recover soon.
I feel sorry that your father is sick must undergo surgery around Christmas time, and you may not have a toast with everyone in the family but I hope is forward to you father lost sick soon.