In context, God tells us one of the purposes of His revelation to mankind. The writer of Hebrews scolds his audience for being "dull of hearing" (verse 11). Using an analogy of milk, the nourishment of children, against "strong meat" (KJV), the fare of those "who are of full age," he laments that he needs to "go back to the basics," the first principles of God's revelation. Not using that revelation to exercise their senses "to discern both good and evil" (verse 14), they had failed to grow up.
The purpose of God's revelation is to provide the nourishment, the food, by which we come "to a perfect man, to the measure of the stature of the fullness of Christ" (Ephesians 4:13). It is God's revelation, His oracles, which allow us to "go on to perfection" (Hebrews 6:1).
The Oracles of God