Romans 4:6 "Just as David also describes the blessedness of the man to whom God imputes righteousness apart from works:"
Because of the finished work of Jesus on the cross, as Christians, we no longer live a life of do, do, do. Under grace, we live a life of done, done, done! Everything promise in the Word of God is already ours through Christ.
Do, do (aka: doo-doo). Sound familiar? It's that little "present" that your dog leaves for you when you're out of the house for an extended period of time.
Similarly, a "performance based" Christianity, or trying to do good so that we will get good is what I call, "religious do, do". Trying to pray long enough, or read the Bible long enough, or fast long enough, just to get good, is religious do, do. Trying to earn God's goodness, or living in fear of something bad happening if you don't do enough, is a total "waste" of time. Religious do,do.
Don't get me wrong, praying and reading the Bible and fasting are all good when you are living a life of grace, and enjoying the freedom and victory you already have in Christ. In Romans 4:6, Paul says the man who God imputes righteousness without doing anything to earn or deserve it, is blessed. That’s powerful and liberating! You were made righteous, it was a gift, you can't do anything to earn it. So, no more religious do, do. At the cross it became done, done, done!