A few years ago, my friend's older brother died. I attended the funeral with my two best friends. None of us had really known the guy, but we wanted to be supportive.
After the casket was lowered into the ground, and people began to leave, my friends and I had the very distinct impression that we had done this before. The three of us saying farewell to a departed friend, a long time ago. I felt like we were standing on a cliff overlooking the sea. It was either storming or getting ready to. The sky felt grey, and the wind was picking up.
One of my friends was standing by the grave, and it occurred to me that she looked very much like an angel of death.
The feeling faded pretty abruptly, but we all sat around talking about it for a long time afterward. It was eerie, and very, very sad.
... And a little bit encouraging, to think that my friends and I had managed to find each other again in this life.