When discussing justification, the apostle Paul wrote:
" If, in fact, Abraham was justified by works, he had something to boast about--- but not before God.
What does the Scripture say?
" Abraham believed in God, and it was credited to him as righteousness'"
{Romans 4:2-3}

We are justified --- pronounced righteous by God -- through faith.
After Justification, Jesus Christ lives in us through the indwelling of the Holy Spirit.
As Christians, we are morally changed by God, liveing in us.
We now want to follow his will and are enabled to do so by the Holy Spirit.