Hebrews 5:9-13

And having been perfected, He became the source of eternal salvation for all those who obey Him,

being designated by God as High Priest according to the order of Melchizedek.

Concerning him we have much to say, and it is difficult to explain, since you have become poor listeners.

For though by this time you ought to be teachers, you have need again for someone to teach you the elementary principles of the actual words of God, and you have come to need milk and not solid food.

For everyone who partakes only of milk is unacquainted with the word of righteousness, for he is an infant.