It is not a sin nor is it wrong for you to be rich because God wants you to be (3 John 2). If your Father owns the heavens and the earth, why should you be poor? That would be an insult and embarrassment to Him. However, you need the power to get wealth which comes from God. This is also described as 'the power to be successful', the 'ability to produce wealth' and 'the strength to make a living'.

Deuteronomy 8:18 GNB
Remember that it is the LORD your God who gives you the power to become rich. He does this because he is still faithful today to the covenant that he made with your ancestors.