1 Cor 3 adresses divisions in the church , specifically those caused by spiritual immaturity and worldliness. Paul first reminds us that the foundation of our church ( and our individual sanctification or "spirtual growth") is Jesus Christ. He explains that we can't build up spiritually by our own efforts and the use of fancy materials (church programs, books, etc). We are God's temple, and the Spirit of God works in us and with His means to accomplish the growth. Be assured though, that even if we get nowhere by attempting to do it ourselves in foolishness, Paul says we will nonetheless be saved. Why would anyone do this though, knowing that they "will suffer loss, ...(and) only as one escaping through the flames" will they be (barely) saved ? We are God's sacred temple, where by God's sovereign grace the "seeds" of spiritual formation are "planted and watered" through the work of men, but the growth is caused by God alone. "So neither he who plants nor he who waters is anything, but only God, who makes things grow. The man who plants and the man that waters have one purpose, and each will be rewarded according to his own labor. For (though)we are God's fellow workers, you are God's field, God's building". Paul concludes this chapter by reminding us again that spiritual wisdom does not come from man, "so then, no more boasting about man('s wisdom)". He says no one can become spiritually wise by "the standards of this age" or the "wisdom of (Christian authors or bible commentators) of this world", for the "thoughts of the wise are futile". BUT, "all things are yours, and you are of Christ, and Christ is of God", so boast in Him and rest in His sanctifying work in you.