I would like to express my condolences to your family, it can be hard for friends and family to find the right words to express at difficult times like these. The Bible is a great source to look into and has helped me personally when My dad passed away. A comforting thought is at Revelation 21:3,4, where it states "...And he will wipe out every tear from their eyes, and death will be no more, neither will mourning nor outcry be anymore the former things have past away". This scripture gives us hope for the future! You can also find comfort in Acts 24:15 - Death does not end it all. May Jehovah God bring you comfort and peace during this difficult time. (Ps.46:1, Ps.83:18)