In the very beginning, it was God's plan for man to prosper, take dominion. He is the very same God today as He was then. Satan's plan was for man be in need, lack. Poverty, lack, need, are direct results of the fall, and sin. He is the same Satan today as he was then, and still loves to make us believe that God has said something other that what He said.
Let me ask you, do you think it wrong, out of God's plan, for a man to marry? If so, we can agree to end this dialogue. if you do not believe it is wrong for a man to marry, do believe it is wrong, in God's eyes, for a man to want good things, a nice house, security, etc.. for his wife and children? Is it sinful in God's eyes for a man to wish to leave an inheritance for his children?
But, the truth is very simple: Satan wishes us to either love the material world (creation) more than the Creator (God), or denounce the creation (material), and fail to appreciate the work of the hand of the Creator. God wishes neither of us, but to love, appreciate and enjoy all the work of his hand, and to love Him much more than all creation.
One final comment: We don't really own anything (in the strict sense of the word), but are stewards of God's creation. If God tells you to sell all, and give the money to the poor, you had better be willing to do so.