International Standard Bible Encyclopedia
(1) The son of Barachiah, who, Jesus says, was slain between the temple and the altar (Matthew 23:35; Luke 11:51 ). The allusion seems to be to the murder of Zechariah, the son of Jehoiada (2 Chronicles 24:20 ff). In this case "Barachiah" would seem to be a gloss which has crept into the text through confusion with the name of the father of the prophet Zechariah, BERECHIAH (which see).
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Orr, James, M.A., D.D. General Editor. Entry for 'Zachariah'. International Standard Bible Encyclopedia. https://www.studylight.org/encyclopedias/eng/isb/z/zachariah.html. 1915.