The example of such a complete love for others is profound. To love God so much as to give ones life for Him is the greatest good especially if that example gives spiritual life to others.
Imagine what the guards saw and thought as St. Max prayed his way to a horrible death, maybe there was some unknown good that came about because of how he chose to show his faith in God at this time.
Not to mention his prior evangelical work.
In St Kolbe’s keeping the faith, he encouraged others to keep faith in God and in good triumphing over evil. This touched many persons lives who carried this experience and witness into their lives after the war.