Oh my goodness,my condolences to you and entire family for the loss of Opa. Death definitely brings pain to those left behind so I will be praying that God strengthens and comforts all of you.96 was a good ripe age and just like you I would think of it as a celebration.
Please cherish and remember the good memories you had with him. Uphold all the wonderful values he taught you, that is how he will always be a part of you.
Don't forget to thank God for the time he gave Opa to be here and ask Him to receive him well on the other side. Sending you and family lots of love and blessings, you will make it through :}