1 Corinthians 3:12–13
1 CORINTHIANS CHAPTER 3
A Reproof of Spiritual Pride. 1 Cor. 3, 1—23.
The building itself: V. 12. Now if any man build upon this foundation gold, silver, precious stones, wood, hay, stubble, v. 13. every man's work shall be made manifest; for the day shall declare it, because it shall be revealed by fire; and the fire shall try every man's work of what sort it is.
Paul here treats of the superstructure which is erected upon the one foundation, and distinguishes between rich and durable material on the one hand, and poor, paltry, and perishing on the other, both, however, serviceable for the erection of the building. He is not referring to the believers that make up the temple of God so much as to the doctrine by which they are won for Christ, and the manner in which their faith serves the entire building in all forms of Christian works, both pictures, however, being closely associated in his mind.
However, among these [in the body which is built upon the true foundation, i.e., upon Christ and faith] there are also many weak persons, who build upon the foundation stubble that will perish, i.e., certain unprofitable opinions [some human thoughts and opinions], which, nevertheless, because they do not overthrow the foundation, are both forgiven them and also corrected. And the writings of the holy Fathers testify that sometimes even they built stubble upon the foundation, but that this did not overthrow their faith (Concordia Triglotta, 233).
And we need not even think of human thoughts, opinions, and faults, but only of the great diversity of gifts and abilities in the kingdom of God, since the building is all done on the basis of the same good foundation, Jesus Christ.
"Whether it be the gold of prophecy, or the silver of doctrine, or the precious stones of hymns, or the wood of keeping rank, or the hay of discipline, or the stalks of alms; whether it be high, brilliant endowment or endowment for the service in small, insignificant things; whether it be the oratory of spiritual tongues or the hand that offers assistance: everything may serve for the benefit of the congregation and reward the worker in the building of God, if he but offers it in the intention of Christ, that it may serve for the growth of the building on the foundation which is laid, not only as a mere outward appendage, but grown together inwardly with the foundation and charged with the love of the Spirit" (Besser, Bibelstunden, 8, 170).
Of all these attempts the apostle says: The work of each man will become manifest, for the day will disclose it. So much, indeed, is evident even now with what kind of material everyone is serving in the Church; it can be seen to some extent what special abilities he possesses; but how a person works, what success he has in his efforts, whether they redound to the blessing or the harm of the believers in the Church, that shall be disclosed and made manifest on the day, the great day, the Day of Judgment and of the revelation of our Lord Jesus Christ. For on that day it shall be revealed with fire, in fire, and the work of every man, what kind it is, that fire will assay, will show.
It is a probationary, not a purgatorial fire; and not the persons are subjected to this fire, but their works in the Church. The idea of a physical purgatory is absolutely remote to this passage. Consuming fire is the element of the last day, and in flaming fire the Lord Jesus will reveal Himself from heaven, 2 Thess. 1, 8.
"This fire will reveal what was worldly and perishable as well as what was spiritual and imperishable in the building of God. . . . Outward honor and dishonor, splendor of wisdom and cover of foolishness, will then be judged infallibly; the fire of probation will penetrate through all pretext into the inner substance, and only that will remain which was built in a Christian manner, borne up by and of the same material as the indestructible foundation, Jesus Christ. . . . The dross of reason and the vagaries of men, even if they be meant ever so well, will be mingled with the ashes, and in the light of the perfect knowledge, wherewith the fire of that day will shine round about us, will be revealed what was imagination and what was divine wisdom, what was hollow talk of art and what powerful word, what was mere opinion and what infallible truth" (Besser, Bibelstunden, 8, 174).
Note that all this presupposes a building upon the foundation of Jesus Christ and His blessed Word.