Maturing in Christ - From Milk to Solid Foods

Hrebrews 5

6 As He said also in another place (Ps. 110:4), You are a Priest forever after the order of Melchisedec. (This is the distinguishing characteristic of this order of Priesthood, and proclaims it as an Eternal One.)
7 Who in the days of His flesh (proclaims the Incarnation of Christ), when He had offered up prayers and supplications with strong crying and tears unto Him (presents the prayer-life of the Master) Who was able to save Him from death (presents the prayer for Resurrection), and was heard (proclaims the fact that God heard and answered His Prayer) in that He feared (the picture in the word “feared” is that of a cautious taking hold of, and a careful and respectful handling; it is Christ taking into account all things, not only His Own desire, but the Will of the Father);
8 Though He were a Son (stresses Deity, but at the same time the role of Christ as “Son of Man”), yet learned He obedience (doesn’t mean He had to learn to obey, for that would mean He had sinned; it means He actively sought out the path of obedience, and then unfailingly walked therein) by the things which He suffered (concerned the entire course of His Life, but more so the Cross);
9 And being made perfect (refers to being brought to the goal fixed by God, which had to be if He was to be the Perfect Sacrifice), He became the Author of Eternal Salvation (proclaims a perfect Salvation, because He was and is the Perfect Redeemer, because He was the Perfect Sacrifice) unto all them who obey Him (we obey Him by exhibiting Faith in the Cross, which then gives the Holy Spirit latitude to work; this Truth was given to Paul [Rom. 6:3–5, 11, 14; Gal. 1:11–12]);
10 Called of God an High Priest (the Title is conferred on Him by God the Father) after the order of Melchisedec. (Christ was not to be a great High Priest merely for the Jews, but for the Gentiles as well; in order for this to be, His Priesthood would have to rest in something other than the Levitical Order; being after the Order of Melchisedec satisfied both demands, because Melchisedec preceded Israel as a people [Gen. 14:18–20; Ps. 110:4].)

FAITH

11 Of Whom we have many things to say (refers to Christ), and hard to be uttered (his difficulty was in adapting the interpretation to the capacity of his readers), seeing you are dull of hearing. (These Jewish Christians were slow and sluggish regarding their understanding of the teaching of New Testament Truth. This made it difficult to teach them.)
12 For when for the time you ought to be teachers (refers to the fact that they had been saved long enough to be mature in the Word by now), you have need that one teach you again which be the first principles of the Oracles of God (pertains to the Old Testament and what it really meant, instead of the way it was being erroneously taken by these Christian Jews); and are become such as have need of milk, and not of strong meat (refers to their lack of maturity).
13 For every one who uses milk (doesn’t refer to one who has just been saved, but rather to those who have been saved for quite some time, and should have advanced in the Word of the Lord) is unskilful in the Word of Righteousness (refers to the benefits of the Cross, from which Righteousness is derived): for he is a babe. (This refers to the individual who does not understand or know all the benefits of what Jesus did at the Cross.)
14 But strong meat belongs to them who are of full age (refers to those mature in the Lord), even those who by reason of use have their senses exercised to discern both good and evil. (Such a person is walking after the Spirit. This refers to placing one’s Faith in the Cross and not after the flesh, the flesh refers to depending on other things [Rom. 8:1–2, 11].)

Swaggart, J. (2005). The Expositor’s Study Bible (pp. 2124–2125). Jimmy Swaggart Ministries.