The word is used of a variety of civil servants and military and judicial personnel (Num. 11: 16) or officials in the Temple (Jer. 20: 1). In the NT an officer is a kind of policeman (Luke 12: 58) attached to the Temple (John 7: 32; 18: 12).
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"officer." In A Dictionary of the Bible. Ed. W. R. F. Browning. Oxford Biblical Studies Online. Feb 12, 2016. <http://www.oxfordbiblicalcstudies.com/article/opr/t94/e1364>.
"officer." In A Dictionary of the Bible. , edited by W. R. F. Browning. Oxford Biblical Studies Online, http://www.oxfordbiblicalcstudies.com/article/opr/t94/e1364 (accessed Feb 12, 2016).