"It is important that we take notice of this. The Bible teaches plainly that there is nothing we can do to merit our salvation. We must rely wholly on what Christ has done for us. It is easy to go on from there to reason, 'Then it doesn't matter how we live! Christ will save us from the consequences of any evil we commit.' But this is fallacious reasoning. The living of good lives is not the cause of our salvation, but it is certainly the result. When we put our trust in Christ, as Paul has been saying throughout this section, we are re-created. We enter new life, where we do the good works God has prepared for us to do."
L. Morris in Reflections on the Letter to the Ephesians