We found "Let not sin your faithful efforts foil" used in 1 sacred songs, each carrying a unique message of faith.
Let not sin your faithful efforts foil
...Be ready when the Bridegroom comes;
Let not sin your faithful efforts foil,
Be ready when the Bridegroom comes....
Be ready when the Bridegroom comes;
Let not sin your faithful efforts foil,
Be ready when the Bridegroom comes.
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