Jealousy & Foundations 1 Cor 3:1-23 : Andrew S

Andrew picks up on what we have learnt from Chapters 1 and 2 that the Corinthian christians had every spiritual blessing but no grounds for boasting and divisions wrought by delusions  of spiritual superiority. The Corinthians thought of themselves as being spiritually superior, in contradiction to the mind of Christ. But Paul describes them as behaving as 'merely human'. 

The only work that matters is work laid upon the foundation of the Lord Jesus.

True spiritual understanding goes hand in hand with character growth. Wisdom does not start with a statement of learning but a statement of relationship.  Prov 9:10 The fear of the Lord is the beginning of wisdom, and the knowledge of the Holy One is insight.
The Corinthians problem was not that they were not smart enough; they were just not applying it. Discernment comes from constant practice to discern between good and evil. Heb 5:12-14. If we want the Christian life then we need to live the Christian life.