Your thoughts raise echoes in the sounding chamber of my own empty head! I use the phrase - nicked from a memorial tablet in Ely Cathedral (just on the right, as you go into the Lady Chapel) - "exchanged time for eternity". And in some of our conversation, especially to do with Jung, and collective consciousness, and praying for the dead, I think Helen Columba and I explored that a little together.
Every moment is eternal. All that will be always has been. We glimpse - as you say - the eternal fleetingly now, because more than that would overwhelm us. It's like a kind of map - the geography lies under, but from the surface, we can't always see it. And the space is as eternal as the moment. We locate ourselves in the eternal geography of time.
I've never found the words to say these things well, and they have eluded me yet again, but maybe there's some glimmer in there.
I do wish people didn't have to die, but sometimes you look at them and you know it is right. Another thing Helen Columba said to me - often, when I was whinging about some wasted disastrous part of my life! - "nothing is lost". And this is why.
Maybe God is like a kind of roadsweeper, tidying up the dust and ashes of our broken lives, but instead of consigning them to landfill, taking them home and weaving them back into the glorious tapestry of life for which we were always meant?
Or, I might be bonkers!