This must be personalized. By faith through grace alone. Both came by faith through grace alone. If a person is saved by works, or even partly by works, then there is something to boast about. There will be absolutely no boasting before God.
Salvation is by grace alone.
We still sin in practice, but our standing before God is one in righteousness. We've been justified and declared righteous. Remember, righteous means righteous. Abraham believed God, and it was accounted to him for righteousness. If you would like to see and download the complete Study Guide for Romans, click here on Talks for Growing Christians .