Hebrews 5:1-4

5:1 For every high priest is taken from among the people and appointed to represent them before God, to offer both gifts and sacrifices for sins. 5:2 He is able to deal compassionately with those who are ignorant and erring, since he also is subject to weakness, 5:3 and for this reason he is obligated to make sin offerings for himself as well as for the people. 5:4 And no one assumes this honor on his own initiative, but only when called to it by God, as in fact Aaron was.