The Bible says, "That money is the root of all evil." Not that money WAS evil. It is what you do with your money that is evil. Does it become your God, do you spend it wisely, do you let it control your life,do you speed it as a good steward, do you share it with the poor, the sick, the ones less fortunate. So, you can be rich and be a Christian. King David was rich, Abraham was rich, King Solomon was rich also. Josheph of Amerthea that offer his tomb for Jesus to be buried in was a rich man, and more, but they were wise with there money as we should be, with little money or lot of money.
Money should never consume us, then it is a sin.