This is a promise that being able to control one's words would make that person "perfect" (James 3:2).
This is a promise that the tongue, however small, "turns" our lives by the words that it speaks.

James 3:2-5a
1 Kings 3
2 Chronicles 1
Proverbs 10:19-21
Psalm 119:11
Psalm 119:50
Romans 10:9-10

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