My new understanding of the meaning of grace is that it is God extending His finger or Spirit to mankind, so that mankind could through His finger or Spirit do what is usually impossible for man. The emphsis here is that it is still mankind who does or works, but s/he works or does by employing the power or grace of God.
The common understanding that Christians have about grace is that mankind is in passive mode, while God does everything. That is why the grace of God is not making people perfect in character today. Yet people are expecting pretribulational rapture to take place any moment from now. Could imperfect people be admitted into heaven?