Augustine of Hippo
What is a thorn? Among thorny plants, it refers to those species that bear the sharpest thorns. Initially, it is a blade of grass; although it appears soft and beautiful, it still grows thorns. Similarly, sinful pleasures may seem delightful and without sting. This grass embodies a thorn; even now, thorns still persist. A thorn gives rise to more thorns; before the wretched pleasures and fleeting joys, there is evident sorrow. Let those who desire something unattainable reflect on their torment; they should consider whether their longing inflicts suffering. And when they obtain that which they illicitly covet, let them be aware of the torment of anxiety that follows.
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They should acknowledge their punishments in this life; prior to that resurrection, when those who have risen in the flesh will not undergo transformation. For we shall all rise, but we will not all be transformed. (1 Cor. 15:51) The corrupt flesh will endure suffering, but not to the extent of death; otherwise, even such pains would cease. Then will the thorns that pierce arise, signifying all pain and torment. These painful thorns represent what we have sometimes mocked: (Prem. 5:3) thorns which evoke tears of repentance, though they come too late and are unfruitful, much like the thorns themselves. The repentance of this age brings healing from pain; while the repentance of that age is punishment for pain. Would you bear these thorns? In the present, you will be pricked by the thorns of repentance, fulfilling the words spoken, “I turned in sorrow when the thorn pierced my heart; I acknowledged my sin, and my guilt was not hidden; I proclaimed my transgressions before the Lord, and You forgave the iniquity of my heart.” Now, fulfill this, now be pierced, so you can discern whether the fate mentioned about certain wicked individuals, “They were cleaved but not pierced,” has befallen you. Observe those who are split open yet not pierced. You witness individuals torn apart, yet they remain unpierced. Here they are within the church, with no sorrow for their return to wholeness from their division. The thorns shall surely grow thorns in the future. Presently, they lack healing from their piercing; in the future, they will face punishment. Even before the thorns bear their thorns, a fire has descended upon them, obscuring their sight from the sun; that is, the wrath of God consumes them while they breathe. This fire of sinful desires, empty accolades, pride, selfish interests, and all that burdens them prevents them from seeing the truth, so they do not appear subdued, nor do they yield to the truth itself. What could be more glorious, dear friends, than being subdued and conquered by the truth? Allow the truth to overpower you; for whether you desire it or not, it will inevitably conquer you. The torments of the underworld have not yet arrived, the eternal fire is not yet upon them: let the one who now thrives in God compare themselves to the wicked person, the blind heart with the enlightened soul: reflect upon the two—one who sees and one who is blind in the flesh. What is the significance of merely seeing in the flesh? Did Tobiah possess physical sight? (Tob. 4:3-19) His son did, while he did not; yet the seeing man guided the blind man towards the path of life. Therefore, when you witness such chastisement, rejoice, for you are not within it.