The False Promise of the Prosperity Gospel: Why I Called Out Joel Osteen and Joyce Meyer
The John Piper video in that article is worthwhile. As Piper says, Osteen and Meyer preach another gospel.
No, it's a true promise. "It is the Father's good pleasure to give you the Kingdom", but you have to accept the gifts. Prosperity is God-ordained. It is we who get in the way. We need to get out of God's way.