Denominations (divisions) are called symptomatic of immaturity by Paul.
1Co 3:1 And I, brethren, could not speak unto you as unto spiritual, but as unto carnal, even as unto babes in Christ.
1Co 3:2 I have fed you with milk, and not with meat: for hitherto ye were not able to bear it, neither yet now are ye able.
1Co 3:3 For ye are yet carnal: for whereas there is among you envying, and strife, and divisions, are ye not carnal, and walk as men?
One might think of denominational Christianity as Christianity 101. Members are usually given a sort of per-digested package of doctrine and told to accept it. This can work to limit individual growth. However, this structure can also work to keep someone from "going off the rails".