And in our church both are limited to those 18 and older. One may apply for membership prior to one's 18th birthday and sit with the elders for candidate examination (personal testimony and reasons for wishing to join), but must be 18 when being accepted (or denied, but I've not seen that occur) by the congregation during an AM service. Membership is required for those 18 and up to participate in "platform" ministries, like choir or programs on Jesus' nativity/passion, but under-18 children of regular attendees may be a part of such programs - are actually encouraged to do so, as participation leads to perseverence.