I know what you believe from what I have seen you write over the years and I know the error of that belief. I guess you believe that all the Apostles were not part of a visible church in one together?
That they all may be ONE, as thou, Father, in me, and I in thee; that they also may be ONE in us; that the world may believe that thou hast sent me. [22] And the glory which thou hast given me, I have given to them; that they may be one, as we also are one-John 17:21-22
The Church is Both Visible and Heavenly, dear Sister just as we know Christ's Divinity from His Visible human nature
Here is excerpts from very good article that explains this well..
http://www.calledtocommunion.com/2009/06/christ-founded-a-visible-church/#denial
III. Denial of Visibility is Ecclesial Docetism
A. Ecclesial Docetism
In Catholic ecclesiology, the ground of the Church’s unity is Christ, who is both spirit and flesh. We are united to Christ by being united to His Mystical Body through the sacrament of baptism. We are more deeply united to Christ and the Church through the sacraments of Confirmation and the Eucharist. An act of schism separates a person from the Church, and hence from Christ, because the Church is Christ’s own Mystical Body. Catholicism is sacramental, in that it looks for the spiritual through the material, just as we know Christ’s divine nature only through His human nature. We do not, as in gnosticism, attempt to bypass the material, and try here in this life to skirt the sacramental and see directly the divine nature or take the God’s-eye point of view, because that is presently beyond us as material creatures. If we want to know our status in heaven, we inquire concerning our status in His Mystical Body on earth. This earth-to-heaven direction of faith’s epistemology is seen in what Jesus says to the Apostles: “whatever you bind on earth will be bound in heaven.”35 The visible and the invisible are bound together because of the incarnation, wherein what is done to the flesh of Christ is done to the Person of Christ. That is precisely why excommunication has teeth; it truly cuts a person off from Christ.
Consider one common Protestant position, according to which all Christians are equally united to Christ by faith alone, and therefore equally united to the Church. I have described this position above as the pin-cushion model. According to this notion of the Church, schism does not do anything to the unity of all Christians, only to the outward manifestation of our otherwise intact spiritual unity. This is a de-materialized (i.e., spiritualized) ecclesiology that in this respect is both gnostic and docetic. Since the incarnate Christ is both spirit and flesh, the visible unity of His Mystical Body is not merely an “outward expression” of the Church’s real spiritual and invisible unity, just as sexual union is not merely a physical expression of the inward/spiritual unity of husband and wife. Sexual union truly should be a bodily expression of a spiritual union. But sexual union is not merely an outward expression of spiritual unity; it is itself a real union of husband and wife. Likewise, the visible unity of the Church (including hierarchical unity) is a real unity of the Mystical Body, not merely an outward expression of the real unity which is spiritual and invisible.
The root problem here is a kind of dualism that treats the spiritual as the really real, and the material as a mere context for the expression of the spiritual. This reduces the Mystical Body to a spirit having some visible members, an invisible pin-cushion with some visible pins. Wherever schism is treated as not separating a person (to some degree) from Christ, there the Church is being treated as fundamentally and intrinsically invisible, with some visible members. Denying the essential unity of the visible hierarchy treats the Mystical Body of Christ as though it is not actually and essentially a Body, because visible hierarchical unity is essential and intrinsic to a body. If a body ceases to be visibly hierarchically one, it ceases to be. This is why a human being cannot survive disintegration of his body. So if visible unity is only accidental to something, that thing is not a living body; it is, at most, only the appearance of a body. Hence those who claim that the Mystical Body of Christ is invisibly one and visibly divided are treating the Body of Christ as though it were merely an apparent Body, not an actual Body. That is why this position is rightly described as ecclesial docetism, because docetism is the heresy which claimed that Christ only appeared to be a man.
That does not mean that we must fall into some kind of ecclesial Eutychianism. Eutychianism, which is also called Monophysitism (meaning “one nature”), was condemned at the Fourth General Council, the Council of Chalcedon in AD 451. According to the Monophysites, Jesus’ humanity was absorbed into His divine nature such that He no longer has a human nature, having only His divine nature (hence “Monophysitism”). Docetism and Eutychianism both deny that Christ has a human nature. For that reason, both docetic and Eutychian notions of the Mystical Body of Christ treat the Church as in itself invisible, spiritual, and immaterial, only visible in the sense that it makes use of embodied human believers in much the same way that the Logos (i.e. the Second Person of the Trinity), according to a docetic conception, perhaps made use of material elements in order to appear as though having a physical body, but was not actually made up of those material elements, nor were they parts of Him. Chalcedonian Christology, with its affirmation of two distinct natures united without mixture in one hypostatic union, entails that the Church as the Mystical Body of Christ is in itself visible and hierarchically organized as one corporate entity.36
The charge that Catholic ecclesiology is Eutychian asserts that the Catholic claim [that the visible Body of Christ is essentially one] mistakenly attributes to the visible aspect of the Church what is only true of the invisible aspect of the Church, and in that way falsely attributes what is only true of the divine nature of Christ to His human nature, as Eutychianism does. But this charge is based on the mistaken notion that visible hierarchical unity is not intrinsically essential to a living human body. The real distinction between Christ’s divine nature and His human nature does not imply that the Mystical Body of Christ is not necessarily visibly one any more than it would imply that Christ’s physical body could continue to exist even if all its parts were separated. Rather, because Christ truly possesses human nature, His Mystical Body is necessarily visibly one in its hierarchy, just as his physical body is necessarily visibly one its hierarchy. A living human body is essentially visibly one. If it ceases to be visibly one, it ceases to be. Hence, its visible hierarchical unity is essential to its being. That is why the Catholic doctrine that the Mystical Body of Christ is essentially visibly one in its hierarchy is not Eutychian.
B. What Does Ecclesial Docetism Look Like in Practice?
The spirituality and visibility of the Church are no more opposed to each other than the soul and body of a man, or, better, than the divinity and humanity in Christ. . . . It is because it ignores this inseparable twofold character of the Church that Protestantism, Lutheran and Reformed, has never succeeded in resisting the temptation to distinguish, by opposing them, an invisible and sole evangelical Church, on the one hand, and, on the other, visible, human, and sinful Churches.37
In practice, ecclesial docetism entails ecclesial consumerism, because it eliminates the notion of finding and submitting to the Church that Christ founded. In the mindset of ecclesial docetism, what one looks for, insofar as one looks, is a community of persons who share one’s own interpretation of Scripture. In ecclesial docetism the identity of the Church is not determined by form and matter, but by form alone. Which form? The form of one’s own interpretation of Scripture. This reveals why there are so many different Protestant denominations, worship centers, and ecclesial communities, none of them sharing the three bonds of unity with any of the others. Just as the practical effect of docetism is a Christ of our own making, disconnected from the historical flesh-and-blood Christ, so the practical effect of ecclesial docetism is a Church made in the image of our own interpretation, disconnected from the historical Church.
This is expressed doctrinally as a denial of the materiality or sacramentality of apostolic succession. Ecclesial docetism redefines ‘apostolic succession’ as preservation of form, i.e., preservation of the doctrine of the Apostles. But without the material component of apostolic succession, the individual becomes the final interpretive arbiter of what the apostolic doctrine is. And so the ‘church-shopping’ commences. And where there is a great variation of demand, a great variation of supply arises. ‘Church’ is reduced to a consumer-driven enterprise, based on each person’s own internal perception of his own spiritual needs and how the competing organizations, institutions, or communities meet those needs. This turns ‘church’ into something egocentric rather than God-centered.
Another necessary effect of ecclesial docetism is apathy regarding visible divisions between Christians, communities, and denominations. If the unity of the Church is spiritual, insofar as each believer is invisibly united to Christ by faith alone, then pursuing visible unity is superfluous, even presumptuous in its attempt to outdo Christ.38 If there is no essentially unified visible hierarchy, then while there may be certain pragmatic reasons for ecumenical cooperation, as there are within political parties, there can be no divine mandate that there be no schisms among us. Ecclesial docetism redefines the term ‘Church’ to refer to an invisible entity into which all believers are perfectly joined no matter to which visible institution (if any) they presently belong.
Herein lies a noteworthy point. Ecclesial docetism conceptually eliminates the very possibility of schism. It does so not by reconciling separated parties, but by defining unity down, as something merely spiritual, and so de-materializing schism as something invisible, and spiritual, i.e., merely a deficiency in charity.
Yes, the Apostles were visible human beings as was Christ as were other Christians as are we who continue in the same faith as Christ preached and the Apostles taught. Where I disagree is when any organized institution presumes to be that visible union alone in exclusion of all other assemblies that share in the Christian faith. Just as Paul reminds us that it is not who Apollos baptized, or Peter or Paul but who are joined together in that we are "like living stones, are being built into a spiritual house to be a holy priesthood" (I Peter 2:5) as the Holy Spirit inspired Peter to write.
This union that IS one in Christ is so not because of everyone being gathered together under one umbrella organization that bills itself as THE church of Christ, but as the one spiritual union, a spiritual "house" that makes us ALL part of the holy priesthood of all believers. Your magesterium has made moves recently to try to demonstrate this attitude of inclusion of the body of Christ and they FULLY accept that being a member of the Roman Catholic Church is NOT a prerequisite to being part of the redeemed in Christ. Do you disagree with them? Rather than take so much time trying to convince those of us who DO follow after Christ in faith and in holiness of life, why not worry more about those within your own congregation that wear the Catholic label but who do not evince that in their own lives? Why does it matter that someone is Baptist and not Roman Catholic if the faith is there as well as the evidence of that faith?