Fortunately spiritual insight does not require agreement. It is a restoration of source-hood in the individual, and restores self-determinism; it requires solely that the individual compare his own experience of the universe with data and be as honest as he can about what he has, himself, observed or experienced.

Religion in the organized sense tends to frown on this as it engenders a bit too much self-determination in the individual and makes him hard to control with mere language or cultural guilt trips and the like.

That's another important difference between the two major senses of "religion", the personal and the communal or organized.