Matthew Poole and continuators on Hebrews 5:14

14 But strong meat belongeth to them that are of full age , even those who by reason of use have their senses exercised to discern both good and evil .

But those great deep and high Mysteries of the Gospel concerning Christ's Natures, their Hypostatical Union, his Offices, his actual fulfilling all his Types in the Old Testament both Personal and Mystical, with the Prophesies of his Gospel-Church-State, and his Mediatory Kingdom, &c. these are the strong Meat and Food of grown Christians, who have reached some maturity in the knowledg of these Gospel-Mysteries, and are of a full Age in Understanding, 1 Cor. 2.6. and 14.20. and Phil. 3.15. Reaching on to the measure of the stature of the fulness of Christ in Knowledg and Grace, Ephes. 4.13.

[non-Latin text not transcribed] are strictly, Organs or Instruments of Sense, as the Eye, the Tongue, and the Hand by a Metonymy express, Seeing, Tasting and Feeling, and so is by anallogy applied to the inward Senses and Faculties of the Soul, whereby they discern and relish Gospel-Doctrines.

[non-Latin text not transcribed] strictly notes such an exercise as Wrestlers use for a Victory with all their Might and Strength, being trained up to it by long Exercise. The Spiritual organs or faculties of Christians are well instructed, practised, made apt and ready, as the external ones are, for their proper work.

[non-Latin text not transcribed] for the discerning and differencing things, so as the Mind discerns what Doctrine is true, and what is false by the Word of Righteousness, and the Will chooseth what is Good, and refuseth what is Evil; the affections love Good, and hate Evil; as the senses external can by Exercise discern what Food is gustful, pleasing and wholesom for the Person, and what is nauseous and unwholesom. So the grown Christian is improved by the exercise of his Spiritual Senses, that can by his enlightned Mind discern higher Gospel-Doctrines, and by his renewed Will rellish the sublimer Mysteries of Christ as they are revealed to him; such the Christian Hebrews ought to have been, so able proficients in the School of Christ.

Even these who [non-Latin text not transcribed], by a gracious habit of Wisdom and Knowledg infused and perfected by long study, practice and exercise of themselves in the Word of Righteousness, by which they are able to apprehend and improve the highest Doctrines of the Mystery of Christ.

Marginal references: Or, perfect.; Or, of an habit of Perfection.