Fortress - a Christian perspective
David sang a song after he was delivered from the hands of Saul. He sang that the Lord is his rock, fortress and deliverer. He declared that God was his salvation and refuge.
A Mighty Fortress Is Our God - The Center for Church Music
The study of the hymn "A Mighty Fortress Is Our God," with downloadable audio file, sheet music, information on why it was written, devotional, and much more.