Hi Carol,
Prophet Muhammad could have been the richest man in Arabia, but he wasn't, why? Because he gave up all of his wealth to poor people. Every single thing he earned he gave it to poor people. So as his SAHABAH (followers)
What is Islam mean? Submission to God.
You submit yourself to God, love him ,adore him, fear him, glorify him...etc.
You can go through the Quranic verses above , read them again and you will understand.
Following the law of God on earth is not enough, faith is the most important thing and because of faith, you follow God's law.
Talk to ya later.