"Give me neither poverty nor riches. Let me devour the food prescribed for me, that I may not become satisfied and I actually deny you and say: “Who is Jehovah?” and that I may not come to poverty and I actually steal and assail the name of my God." (Proverbs 30:7-9)
"To be sure, it is a means of great gain, this godly devotion along with self-sufficiency. For we have brought nothing into the world, and neither can we carry anything out. So, having sustenance and covering, we shall be content with these things.
However, those who are determined to be rich fall into temptation and a snare and many senseless and hurtful desires, which plunge men into destruction and ruin. For the love of money is a root of all sorts of injurious things, and by reaching out for this love some have been led astray from the faith and have stabbed themselves all over with many pains." (1Tim 6:6-9)
Notice that is does NOT say that money itself is evil, but rather it is the LOVE OF MONEY that is harmful. Job was righteous and rich at the same time because he always put God first, even before his wealth.
"If I have put gold as my confidence,
Or to gold I have said, ‘You are my trust!’
if I used to rejoice because my property was much,
And because my hand had found a lot of things;
If I used to see the light when it would flash forth,
Or the precious moon walking along,
And my heart began to be enticed in secrecy
And my hand proceeded to kiss my mouth,
That too would be an error for [attention by] the justices,
For I should have denied the [true] God above." (Job 31:24-28)
But the point of Jesus' illustration at Matthew 19:23, 24 was simply:
"If a person becomes attached to his possessions as that wealthy young man did, they could become a barrier to his serving Jehovah wholeheartedly. That could be true both of one who is already wealthy and of one who is “determined to be rich.” (1 Timothy 6:9, 10) Trusting too much in material things can lead a person to be less ‘conscious of his spiritual need.’ (Matthew 5:3) As a result, he might not feel the same need for Jehovah’s support. (Deuteronomy 6:10-12) He might come to expect special treatment in the congregation. (James 2:1-4) And he could spend most of his time enjoying his wealth rather than serving Jehovah."
"Watchtower" Jan. 1, 2006 p. 22