1 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.

See also:

Objection: Healing Cannot Be in the Atonement Because Healing Can Be Lost, but Salvation Cannot Be Lost
Objection: We Should Live for Eternity, Not for Temporal Blessings
Objection: Faith Preachers Are Extravagant-Living Money-Grubbers
Objection: Teaching Grace Gives People a License to Sin