Luther’s teaching:  “sola fide”--faith alone justifies; faith without works is
sufficient for salvation and alone justifies.
Biblical argument:
I Corinthians 6:11  That is what some of you used to be;
but now you have had yourselves washed, you were sanctified,
you were justified in the name of the Lord Jesus Christ and in
the Spirit of our God.
James 2:26 For just as a body without a spirit is dead, so also
faith without works is dead.
Church’s teaching: justification  is the supernatural sanctification and
renewal of the person who thus becomes holy and pleasing to God;
the sinner is made holy, restored to God's friendship, in the state
of grace.