God does not have a problem with us having money. He realized how important it is but He also realized, that as humans, we could become too attached to money and the material things that we could purchase with it.
Jesus talked about money more than He did Heaven and Hell combined.
Jesus talked about money more than anything else except the Kingdom of God.
11 of 39 parables talk about money.
1 of every 7 verses in the Gospel of Luke talk about money.–Answers.com
Jesus wants us to understand that money, in and of itself, is neither good nor evil. Whether it is good or evil in our lives depends on how we acquire it, what we do with it, and whether or not money becomes our “god” .
This passage is a warning to those who would get their riches using the wrong methods and use it to purchase the wrong things for the wrong reasons. God will not take second place to anything or anyone.
“No one can serve two masters; for either he will hate the one and love the other, or else he will be loyal to the one and despise the other. You cannot serve God and mammon.–Matt. 6:24 (NKJV)
Mammon means more than just money. In earlier times, mammon was the god of wealth and riches, so it refers to money, material things and false gods. It can also refer to a wicked spirit that causes people to do sinful acts to accumulate wealth of any sort. Jesus knew that we needed money to buy what we need to sustain life, but He also knew it could be a huge problem. Now we can see why Jesus talked about money so often and why He warned us about getting attached to it.
Having no money or very little money can be a problem as well as having too much. Having too much seems to be the bigger problem. There are more Christians who fail the “prosperity” test there are who fail the “poverty” test.
Here is some advice from Proverbs:
7 O God, I beg two favors from you;
let me have them before I die.
8 First, help me never to tell a lie.
Second, give me neither poverty nor riches!
Give me just enough to satisfy my needs.
9 For if I grow rich, I may deny you and say, “Who is the Lord?”
And if I am too poor, I may steal and thus insult God’s holy name
–Proverbs 30:7-9 (NLT)