31 And the teaching I gave you, my brothers, was such as I was able to give, not to those who have the Spirit, but to those who are still in the flesh, even to children in Christ. 2 I gave you milk and not meat, because you were, then, unable to take it, and even now you are not able; 3 Because you are still in the flesh: for when there is envy and division among you, are you not still walking after the way of the flesh, even as natural men?
Matthew Henry's Commentary on 1 Corinthians 3:1-3
Commentary on 1 Corinthians 3:1-4
(Read 1 Corinthians 3:1-4)
The most simple truths of the gospel, as to man's sinfulness and God's mercy, repentance towards God, and faith in our Lord Jesus Christ, stated in the plainest language, suit the people better than deeper mysteries. Men may have much doctrinal knowledge, yet be mere beginners in the life of faith and experience. Contentions and quarrels about religion are sad evidences of carnality. True religion makes men peaceable, not contentious. But it is to be lamented, that many who should walk as Christians, live and act too much like other men. Many professors, and preachers also, show themselves to be yet carnal, by vain-glorious strife, eagerness for dispute, and readiness to despise and speak evil of others.