Explaining death

🌸💙💙💖🌸 • Wifey 💍Mama to an angel 👼twin boys 👦👱‍♂️and a little princess👸🏼Fluent in sarcasm but I mean well..mostly

My father in law past away this morning. My husband and I are trying to decide how to explain this to our 4 year olds and also torn as to if they should attend the funeral or not. This is a new experience for us and not sure if they should be a part of it, or just the visitation or none at all.