Matthew 6:24
No one is able to serve two masters: for he will hate the one, and love the other; or cleave to the one, and despise the other. You are not able to serve God and mammon.
Luke 12:15
And He said to them, See, and beware of all covetousness: because his life is not in that which aboundeth to any one, from those things belonging to him.
1 Timothy 6:10
For the love of money is a root of all evils: which some seeking after have wandered from the faith, and pierced themselves through with many sorrows.
Matthew 6:19
Lay not up for yourselves treasures upon the earth, where moth and rust corrupt, and thieves break through and steal: