We are sinners saved by grace, a gift of God. We are not rescued from our sins and saved for heaven by what we do.
Here is a link with one of the best explanations of grace I have heard. http://www.rejoicetv.org/RTVMessages.aspx
If the link does not work, go to http://www.rejoicetv.org, click on the button on the left side, View and Listen to Messages Online, which takes you to Rejoice TV Messages. Then scroll to the listing of messages and depending upon when you do this, scroll to the message for January 3, 2016, titled “Great Grace in Galatians.”