gird (up) one's loins, to

gird one's loins

Also, gird up one's loins. Prepare oneself for action, as in I'm girding up my loins for that crucial interview. This expression comes from the Bible (Proverbs 31:17) and originally alluded to tucking up the traditional long robe into a girdle (that is, a belt) so it will not hamper physical activity. [c. 1600]
See also: gird, loin
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

gird (up) (one's) loins

To summon up one's inner resources in preparation for action.
See also: gird, loin
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

gird (up) one's loins, to

To prepare for action (hard work, a journey, warfare). The term comes from the Bible, both Old and New Testaments, and uses gird in the sense of “encircle with a belt or band.” The ancient Jews wore loose clothing and put on a girdle, or belt, only when they went to work or set out to travel. Thus, “He girded up his loins, and ran” appears in I Kings (18:76), and “Gird up now thy loins like a man” in Job (in several passages). It had already become figurative in the New Testament, where 1 Peter has it, “Gird up the loins of your mind, be sober” (1:13).
See also: gird
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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