King James Bible
King James Version (KJV)
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From a remote derivative of echo (meaning to fortify, through the idea of holding safely); a castle (figuratively, argument) -- stronghold.
see GREEK echo
1. properly, a castle, stronghold, fortress, fastness, the Sept. for מִבְצָר, etc.; very often in 1 and 2 Macc.; Xenophon, Hellen. 3, 2, 3.
2. tropically, anything on which one relies: καθεῖλε τό ὀχύρωμα, ἐφ' ᾧ ἐπεποίθεισαν, Proverbs 21:22; ὀχύρωμα ὁσίου φόβος κυρίου, Proverbs 10:29; in 2 Corinthians 10:4 of the arguments and reasonings by which a disputant endeavors to fortify his opinion and defend it against his opponent.