I think it was a woo orb.
Sad, difficult time, as my Dad was terminally ill. I was at another relative's funeral, lots of people in the church, and I just had a weird feeling when they brought the coffin in.
A saw a light behind me, looked up, and saw a crackling, golden ball of light, and knew it was my relative. I just saw him. He sort of fizzed, and then vanished. I grabbed DH to look, but it had gone.
I was very shaken and unsettled for ages, but then had a vivid dream where my relative told me I hadn't imagined it. He mentioned other stuff, which made little sense, but I phoned his widow that day, and told her all about it - she burst into tears, said it all made sense to her. Her daughter phoned an hour later, to tell me about an almost identical experience she'd had some years before.
A couple of years later, I had a very similar but happy experience in a church in France. I was my late great grandma - like a crack in the ceiling and fizzing shining light. Just for a split second.
Honestly, I am not into this stuff, but it was the most amazing, clear, vivid experience.
I was chatting to a vicar some months later (not for religious reasons, as I'm not a church person, but met her socially). I asked her about it, and she just said that when people said they had "seen the light", they just knew.