See (7:1-10) for an explanation of Jesus’ standing as High Priest “according to the order of Melchizedek.” The emphasis of the writer here is that such a concept was difficult to understand because they were “dull of hearing.”
He explains their problem in verses 12-14. They were spiritually immature. They had been taught the rudiments of the gospel, but had not fully retained that teaching, nor had they learned more. A diligent and consistent study of God’s word is needed by His people. It contains the mind of God, and if I am diligent as a child, I will hide them “in my heart, that I might not sin against You [God]” (Psalm 111:11).
The writer describes those who know only the milk of the word to be babes. While we all have different capabilities, God expects us all to grow in faith! This is commanded by Him, but it is a commandment with benefits to us. The more we know and understand of God’s will, the more capable we are to share that message, and to inoculate ourselves against the wiles of the devil. As the Hebrew writer says, “by reason of use [we] have our senses exercised to discern both good and evil” (14).
