He does what? Both before the “but let every man” comment and after he is still referencing the building of the church by “God’s husbandry” which would be the pastors and teachers he’s talking to.
1 Corinthians 3:10 According to the grace of God which is given unto me, as a wise masterbuilder, I have laid the foundation, and another buildeth thereon. But let every man take heed how he buildeth thereupon.
11 For other foundation can no man lay than that is laid, which is Jesus Christ.
12 Now if any man build upon this foundation gold, silver, precious stones, wood, hay, stubble;
There is no way a logical reader would infer anything else but that he is still talking about the church leadership.
How so? "Every man" cannot apply to the clergy alone, nor are the church leadership the only people who build on the foundation of faith. We all do, or rather, are supposed to.
And, I ask again, is it your opinion that the clergy (however understood) go through the purgatory but other Christians do not?