5:4 called by God, just as Aaron was. The initial call of Aaron (Ex. 28:1) was confirmed in response to the challenge of Korah, Dathan, and Abiram (Num. 16) through the budding of Aaron’s staff (9:4; Num. 17:1–10). The priestly privilege of approach to God is by invitation only—mediated through physical descent for the Old Testament Levitical priests, but finally established through the divine oath to Jesus the Son (7:11–28).