[Mom MD]

Ephesians 2:8-9 New International Version (NIV). 8 For it is by grace you have been saved, through faith —and this is not from yourselves, it is the gift of God— 9 not by works, so that no one can boast.

[Petrosius]

Through faith, not faith alone. Additionally, as with Romans and Galatians, the works to which Paul is referring in Ephesians are the works of the Mosaic Law, not the avoidance of sin.