Hi Extol,
I believe in the salvation of all, but I'm wondering if this passage is referring to EVERYBODY, or are the ones who build "wood, hay and straw" a particular group, such as the ministers and Christians who are blinded?
Paul here is speaking to the believers, but these were imature babes in Christ.
1Cor 3:1 And I, brothers, could not speak to you as to spiritual ones, but as to fleshly, as to babes in Christ.
Since these are believers, they do have the foundation of Christ. Those who do not have the Truth, have no foundation.
Luke 6:47 Whoever comes to Me and hears My Words, and does them, I will show you to whom he is like.
v. 48 He is like a man who built a house and dug deep and laid the foundation on a rock; and a flood occurring, the stream burst against that house and could not shake it; for it was founded on a rock.
v. 49 But he who hears and does not perform, is like a man who built a house on the earth without a foundation, on which the stream burst, and immediately it fell. And the ruin of that house was great.
In 1 Cor.3, I think that Paul is telling those immature believers in verse 13, that they need to step up to there calling. And that they are being judged now and what they do(works) in this life, "of each the work shall become manifest, for the day shall declare [it]," "the day" is the return of Christ at the first resurrection.
14 "if of any one the work doth remain that he built on [it], a wage he shall receive;"
I believe this wage is the reward, for each of how they will service under Christ in the kingdom.
Rev 22:12 "And behold, I am coming quickly, and My reward is with Me, to give to every one according to his work.
15 "if of any the work is burned up, he shall suffer loss; and himself shall be saved, but so as through fire."
None of the ways of the flesh will be left in the elect when they are resurrected, it will all have to be burned out.
If this passage is indeed talking about the salvation of all, how do non-Christians "build on the foundation that is Christ"?
For the vast majority of humanity that will be in the Lake of fire. All will be taught the Truth/Christ, and build on that foundation/Christ. They will be taught righteouness and also brought into the kingdom.
Rev 15:4 Who shall not fear You, O Lord, and glorify Your name? For You only are holy. For all nations shall come and worship before You, for Your righteousnesses were made known.
Hope this helps.
mercy, peace, and love
Kat