Hebrews 5 New King James Version (NKJV)
Qualifications for High Priesthood
5 For every high priest taken from among men is appointed for men in things pertaining to God, that he may offer both gifts and sacrifices for sins. 2 He can have compassion on those who are ignorant and going astray, since he himself is also subject to weakness. 3 Because of this he is required as for the people, so also for himself, to offer sacrifices for sins. 4 And no man takes this honor to himself, but he who is called by God, just as Aaron was.
A Priest Forever
5 So also Christ did not glorify Himself to become High Priest, but it was He who said to Him:
“You are My Son,
6 As He also says in another place:
“You are a priest forever
7 who, in the days of His flesh, when He had offered up prayers and supplications, with vehement cries and tears to Him who was able to save Him from death, and was heard because of His godly fear, 8 though He was a Son, yet He learned obedience by the things which He suffered. 9 And having been perfected, He became the author of eternal salvation to all who obey Him, 10 called by God as High Priest “according to the order of Melchizedek,” 11 of whom we have much to say, and hard to explain, since you have become dull of hearing.
12 For though by this time you ought to be teachers, you need someone to teach you again the first principles of the oracles of God; and you have come to need milk and not solid food. 13 For everyone who partakes only of milk is unskilled in the word of righteousness, for he is a babe. 14 But solid food belongs to those who are of full age, that is, those who by reason of use have their senses exercised to discern both good and evil.
Hebrews 5 New International Version (NIV)
5 Every high priest is selected from among the people and is appointed to represent the people in matters related to God, to offer gifts and sacrifices for sins. 2 He is able to deal gently with those who are ignorant and are going astray, since he himself is subject to weakness. 3 This is why he has to offer sacrifices for his own sins, as well as for the sins of the people. 4 And no one takes this honor on himself, but he receives it when called by God, just as Aaron was.
5 In the same way, Christ did not take on himself the glory of becoming a high priest. But God said to him,
“You are my Son;
6 And he says in another place,
“You are a priest forever,
7 During the days of Jesus’ life on earth, he offered up prayers and petitions with fervent cries and tears to the one who could save him from death, and he was heard because of his reverent submission. 8 Son though he was, he learned obedience from what he suffered 9 and, once made perfect, he became the source of eternal salvation for all who obey him 10 and was designated by God to be high priest in the order of Melchizedek.
Warning Against Falling Away
11 We have much to say about this, but it is hard to make it clear to you because you no longer try to understand. 12 In fact, though by this time you ought to be teachers, you need someone to teach you the elementary truths of God’s word all over again. You need milk, not solid food! 13 Anyone who lives on milk, being still an infant, is not acquainted with the teaching about righteousness. 14 But solid food is for the mature, who by constant use have trained themselves to distinguish good from evil.