archaic
Used to present a new scene, situation, or turn of events, often with the suggestion that, though surprising, it could in fact have been predicted.
(look and see)
‘you took me out and, lo and behold, I got home to find my house had been ransacked’
'I'd been searching for my glasses all over the house when, lo and behold, they were on my head the whole time.'
english
Optimized studying based on the forgetting curve vastly improves memorization. - What is reminDO?
Memorize