I read something that should have not surprised me this morning re Martin Luther.
His favorite part of God's Word was the doctrine of justification by faith. J. Vernon McGee states this in his notes on Galatians of the New Testament. This is actually a well-known belief that Luther had no toleration for legalism.
There are many places in God's Word that stresses the belief of only faith for salvation. Some, Romans 1:17 and 4:5, Hebrews 10:38 and Galatians 2:11.
I remember well the verse for the Rev. James Kennedy's class I took at Salem Baptist Church several years ago that says, "Rooted and built up in Him and established in the faith, as ye have been taught, abounding therein with thanksgiving." It is Colossians 2:7. The study was "Evangelism Explosion."
The whole chapter 2 of Colossians expressed faith and its "fullness"of salvation.
This should be our understanding of the grace of God. On our own we can only see pleasing man, its human law. This is a study to make but with belief first in God's Word. When that comes first, comes understanding.
To shorten this post, first try understanding for yourself asking God to help you.