The tenth of Paul's Epistles, and the fifteenth book in the New Testament, is I Timothy. It was written around 64 AD to Timothy, one of Paul's closest friends, who he had converted 15 or so years earlier.
The letter was written shortly after Paul had visited Ephesus, where Timothy had been positioned as Paul's representative. Paul hoped to one day return, but this letter was written to give Timothy advice on his ministry in the meantime.
I Timothy 6:7-10
"For we brought nothing into this world, and it is certain we can carry nothing out. And having food and raiment let us be therewith content. But they that will be rich fall into temptation and a snare, and into many foolish and hurtful lusts, which drown men in destruction and perdition. 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"