Old Testament

Hebrews 5
Our High Priest Is Like Melchizedek
51To be sure, every high priest is chosen from the people and is appointed to represent the people in the things pertaining to God, so that he may offer gifts, as well as sacrifices, for sins. 2He is able to deal gently with those who are ignorant and going astray, since he himself is also weak in many ways. 3And for this reason he is obligated to offer sacrifices for his own sins, just as he does for the people.
4No one takes this honor on himself, but he is called by God, just as Aaron was. 5In the same way, Christ did not take the glory of becoming a high priest on himself, but God said to him:
You are my Son.
Today I have begotten you.[]
6He also said the same thing in another place:
You are a priest forever, like Melchizedek.[]
7In the days of his flesh,[] he offered prayers and pleas with loud cries and tears to the one who was able to save him from death, and he was heard because of his reverence. 8Although he was the Son, he learned obedience from the things he suffered. 9After he was brought to his goal, he became the source of eternal salvation for everyone who obeys him, 10because he was designated by God as a high priest, like Melchizedek.
Milk or Solid Food
11We have much to say about this, and it is difficult to explain, because you have become too lazy to listen. 12In fact, though by this time you ought to be teachers, you need someone to teach you the beginning principles of God's word all over again. You have become people who need milk, not solid food. 13For everyone who lives on milk is not acquainted with the word of righteousness, because he is still an infant. 14But solid food is for mature people, who have their senses trained by practice to distinguish between good and evil.