I'd forgotten just how much I appreciated this article on Charles Finney by Phil Johnson until I perused it again today.
The title is A Wolf In Sheep's Clothing: How Charles Finney's Theology Ravaged the Evangelical Movement
He denied the doctrines of original sin, justification by faith alone, and penal substitutionary atonement.
Here's Phil Johnson's conclusion:
Charles Grandison Finney was a heretic. That language is not too strong. Though he excelled at cloaking his opinions in ambiguous language and biblical-sounding expressions, his views were almost pure Pelagianism. The arguments he employed to sustain those views were nearly always rationalistic and philosophical, not biblical. To canonize this man as an evangelical hero is to ignore the facts of what he stood for.