A sepulchre is like a very special house where people put the bodies of their loved ones after they die. It's usually a big and fancy building, and it's a place where people go to remember and honor the person who has passed away. It's like a special place where their memory is kept alive. People might leave flowers or other things to show that they still care about the person who has gone. It's a special and important place for people to go to feel connected to their loved ones even after they are no longer with them.