Proverbs 12:18 (NKJV) — 18 There is one who speaks like the piercings of a sword, But the tongue of the wise promotes health.

The influence of words on well-being. Repeatedly the Book of Proverbs stresses the power of words. (See Proverbs 18:21.) It is possible to speak words that pierce others like swords. Wrong words can have very damaging effects. (See Proverbs 18:8; 26:22.) But the wise person will use the tongue to help, to strengthen, to encourage. (See Ephesians 4:29.) In doing so, the wise contribute positively to the physical, mental, and spiritual health of others.

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