[Grammar] Preposition

[keen learner]

Which is correct?

He repented of his folly.
He repented for his folly.
Thank you.

 

[bhaisahab]

Which is correct?

He repented of his folly.
He repented for his folly.
Thank you.

Both are used.

 

[keen learner]

Both are used.

Can they be used interchangeably or in different contexts?
Thanks

 

[Rover_KE]

Keen learner, your threads have nearly identical and unhelpful titles.

Note that Repent would have been a better title as it would have been easier for me to find than 'Preposition' after I'd been away researching it a bit.

They can not be used interchangeably.

This thread explains why much better than I could.

Rover