The Introit for Invocavit, from Psalm 91:
He shall cry to Me, and I shall hear him; I will deliver him and I will glorify him; I will fill him with length of days.
The Formula of Concord - 28 May AD 1577 [image: Jakob Andreae] After Martin Luther's death, political changes altered the face of the Evangelical (Lutheran) Church. Emperor Charles...
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