means the present letter (or, perhaps, this section of the letter) is not ‘solid’ food, but ‘milk’. Why does Paul call them ‘babes in Christ’ and ‘fleshly’ people who live according to merely ‘human standards’? Here Paul takes them and us back to the beginning of the letter and his primary concern in writing (see on 1:10–17). It is their factiousness, their evident ‘jealousy and strife’ (verse 4), which demonstrates their immaturity. ‘One says, “I am of Paul,” and another says, “I am of Apollos.” ’