In mortal sin, yes
Matthew 19:24
Again I tell you, it is easier for a camel to go through the eye of a needle than for a rich man to enter the kingdom of God."
When you look at the verse in context, it reads:
"Again I say to you, it is easier for a camel to go throught the eye of a needle, than for a rich man to enter the kingdome of God."
When the disciples heard this, they were very astonished and said, "Then who can be saved?"
And looking at them Jesus said to them, "With people this is impossible, but with God all things are possible."
Matthew 19:24-26
When trying to determine a position to take based on the Bible, it is wise to consider the whole counsel of God rather than to pick out individual verses that support your position.
What about the story of Job. Godly man who was rich, God stripped him of all he had, stood the test of his convictions to God, God gives him everything and MORE for his convictions.
Jesus is being classically terse. You can't build a whole theology on a single passage of the Bible. "Rich" refers to the relationship you have with your money. Is it your ultimate treasure that you can't bear to part with even for God's sake? Or is it your tool to do good? Is it your master or is it your servant? A man can be rich with $10, or "unrich" with a billion dollars.