Is "insisting on" followed by a statement acceptable?

Question

Can I say this?

I insisted on that the event was a turkey.

I know that we say: somebody insists on something.

But I didn't know before yesterday that we can say: somebody insists that.

So is it common or correct to say: insist on that?

Answer 1

It's certainly not common, as this NGram shows:

If the 'object' being insisted is a statement, you drop the on:

I insisted that the event was a turkey.