TV star Phil Spencer says his parents would have "quietly slipped away" after their car went into a shallow stream in the UK.
Posting a lengthy statement to Instagram, the Location, Location, Location host said the fact the couple died together in the accident on Friday (UK time) was "a blessing in itself".
He also revealed his mother Anne had Parkinson's and father David suffered from dementia.
"Although they were both on extremely good form in the days before (hence the sudden idea to go out to lunch), mum's Parkinson's and dad's dementia had been worsening and the long term future was set to be a challenge. So much so that mum said to me only a week ago that she had resigned to thinking 'now it looks like we will probably go together'. And so they did.
"That was what God had planned for them - and it was a good plan."
Spencer also revealed more about the accident, revealing they had never regained consciousness despite being pulled from the car.
"The car, going very slowly, toppled over a bridge on the farm drive, upside down into the river. There were no physical injuries and I very much doubt they would have even fought it - they would have held hands under the water and quietly slipped away.
"As many farmers do - my brother had a penknife and so was able to cut the seat belts - he pulled them out of the river but they never regained consciousness.
"Although desperately sad and shocked beyond all belief - all family are clear that if there can ever be such a thing as having a 'good end' - this was it."
It was revealed over the weekend, police and the fire brigade raced to the scene after the alarm was raised, while an air ambulance landed on the farm at Littlebourne, near Canterbury, Kent.
UK police said a report was now being prepared for the coroner.
