A verse in the Bible is often misquoted. Dickens does, or at least puts into the mouth of a character a sample of the error:

Origin
From the Bible. Often misquoted as 'money is the root of all evil'. Timothy 6:10. 'For the love of money is the root of all evil: which while some coveted after, they have erred from the faith, and pierced themselves through with many sorrows.'

Mr. Merdle is a fabulously wealthy businessman. The whole discussion is about money. No mention of the love of money.

"Bar came up.
Bar, with his little insinuating jury droop, and fingering his
persuasive double eye-glass, hoped he might be excused if he
mentioned to one of the greatest converters of the root of all evil
into the root of all good,"