Bible Dictionaries
Pole

Wilson's Dictionary of Bible Types

Numbers 21:8 (a) The Cross of CHRIST is represented by this figure. Our Lord JESUS said that it represents the Cross on which He was lifted up at Calvary as the pole was lifted up in the wilderness, and on which the serpent hung. (See John 3:14).

Bibliography Information
Watson, Walter. Entry for 'Pole'. Wilson's Dictoinary of Bible Types. https://www.studylight.org/​dictionaries/​eng/​wdt/​p/pole.html. 1957.