I Corinthians 3:13

Every man's work--each teacher's superstructure on the foundation. the day--of the Lord (Co1 1:8; Heb 10:25; Th1 5:4). The article is emphatic, "The day," that is, the great day of days, the long expected day. declare it--old English for "make it clear" (Co1 4:4). it shall be revealed by fire--it, that is, "every man's work." Rather, "He," the Lord, whose day it is (Th2 1:7-8). Translate literally, "is being revealed (the present in the Greek implies the certainty and nearness of the event, Rev 22:10, Rev 22:20) in fire" (Mal 3:3; Mal 4:1). The fire (probably figurative here, as the gold, hay, &c.) is not purgatory (as Rome teaches, that is, purificatory and punitive), but probatory, not restricted to those dying in "venial sin"; the supposed intermediate class between those entering heaven at once, and those dying in mortal sin who go to hell, but universal, testing the godly and ungodly alike (Co2 5:10; compare Mar 9:49). This fire is not till the last day, the supposed fire of purgatory begins at death. The fire of Paul is to try the works, the fire of purgatory the persons, of men. Paul's fire causes "loss" to the sufferers; Rome's purgatory, great gain, namely, heaven at last to those purged by it, if only it were true. Thus this passage, quoted by Rome for, is altogether against, purgatory. "It was not this doctrine that gave rise to prayers for the dead; but the practice of praying for the dead [which crept in from the affectionate but mistaken solicitude of survivors] gave rise to the doctrine" [WHATELY].

In this chapter the apostle, I. Blames the Corinthians for their carnality and divisions (Co1 3:1-4). II. He instructs them how what was amiss among them might be rectified, by remembering, 1. That their ministers were no more than ministers (Co1 3:5). 2. That they were unanimous, and carried on the same design (Co1 3:6-10). 3. That they built on one and the same foundation (Co1 3:11-15). III. He exhorts them to give due honour to their bodies, by keeping them pure (Co1 3:16, Co1 3:17), and to humility and self-diffidence (Co1 3:18-21). IV. And dehorts them from glorying in particular ministers, because of the equal interest they had in all (Co1 3:22 to the end).