No provisions were made for an executive branch to enforce the laws nor for a national court system to interpret them. A legislative Congress was the sole organ of the national government, but it had no power to force the states to do anything against their will.
Answer:
"The doctrine of sola fide asserts God's pardon for guilty sinners is granted to and received through faith alone, excluding all "works" (good deeds). ... According to Martin Luther, justification by faith alone is the article on which the Church stands or falls."
Source: Wikipedia
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