Occasional hearing is the practice of attending worship services or

preaching A sermon is a religious discourse or oration by a preacher, usually a member of clergy. Sermons address a scriptural, theological, or moral topic, usually expounding on a type of belief, law, or behavior within both past and present contexts. E ...

by ministers of denominations other than one's own. Historically, the practice has been resisted and is even a matter of church discipline among churches that study

confessional A confessional is a box, cabinet, booth, or stall where the priest from some Christian denominations sits to hear the confessions of a penitent's sins. It is the traditional venue for the sacrament in the Roman Catholic Church and the Luther ...

integrity. Churches that traditionally have resisted the practice tend to be theologically conservative and confessional. The practice has contributed to multiple anonymous reviews on one particular website of services by visiting worshippers.

References

Reformed Christianity Christian ecumenism {{Christianity-stub