Psalm 37:1 - Do not fret because of evil men or be envious... Psalm 37:7-8 - Do not fret when men succeed in their ways ... wicked schemes ... (Fretting) leads only to evil. Proverbs 24:19 - Do not fret because of evil men...
Matthew 6:25, Luke 12:22 - Do not worry about your life Matthew 6:27, Luke 12:25-26 - Does worrying add time to your life? No? Then why worry about the rest? Matthew 6:28 - Do not worry about clothes Matthew 6:31, Luke 12:29 - Do not worry about your food, drink, clothing Matthew 6:34 - Do not worry about tomorrow Matthew 10:19, Mark 13:11, Luke 12:11-12, Luke 21:14 - When arrested, do not worry about what to say, how to say it. Just say whatever is given to you at the time by the Holy Spirit. Make up your mind beforehand not to worry how you will defend yourselves.
"to dig" (a pit), the word meaning "a depression," "a hollow or sunken spot in a garment affected by a kind of leprosy," the Revised Version (British and American) "it is a fret."
Revised Version has "fretful" for "angry" (Proverbs 21:19), margin "vexation."