James 3:1–12 discusses talking. This passage continues James’s big idea that faith and works go together. Specifically, that what one does (or says) proves what they really believe. Those who trust God, who really believe Him, begin to be changed in their speech, as well. And yet, everyone still stumbles. The tongue is untamable, capable of great destruction. In fact, James calls it a fire and a restless evil that is itself set on fire by hell. We need to be changed. It shouldn’t be that we praise God and curse the people made in His image. And yet, as fallen people, we do just that.
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“James 3:10” Bibleref.com
10 Out of the same mouth comes blessing and cursing. My brothers, these things ought not to be so.