The Scofield Bible Commentary, by Cyrus Ingerson Scofield, [1917], at sacred-texts.com
rod of Aaron
Aaron's rod that budded: Type of Christ in resurrection, owned of God as High Priest. Aaron's priesthood had been questioned in the rebellion of Korah, so God Himself will confirm it (Num 17:5). Each of the tribe-heads brought a perfectly dead rod; God put life into Aaron's only. So all the authors of religions have died, Christ among them, but only Christ was raised from the dead, and exalted to be a high priest. (Heb 4:14); (Heb 5:4-10).