What is committing no mistake; incapable or error or failure certain; sure; unfailing; as, the unerring wisdom of God. Hissing in air the unerring weapon flew. Dryden called?

unerring — Committing no mistake; incapable or error or failure certain; sure; unfailing; as, the unerring wisdom of God. Hissing in air the unerring weapon flew. Dryden. (Webster's 1913.)

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