You cannot be a Roman Catholic and a Christian the two are mutually exclusive. Roman Catholicism is a system of works and a whole heap of false doctrines and mysticism and Christianity is by faith through God's grace plus nothing.
A whole new god and system of worship were introduced in Israel (1 Kg.16:29-33). Through Jezebel, Baal worship came into the Land, resulting in more idolatry than ever before. In the worship of Baal there was total immorality. Jezebel thus became a very real picture of what the Roman Catholic Church evolved into during the period of the Dark Ages. A paganism was introduced resulting in idolatry and spiritual fornication. It became a new religious system bearing little resemblance to the New Testament Church. It was during this period that ten false doctrines were introduced into the Church leading to spiritual fornication.
Justification by works - Not simply by grace through faith;
Baptismal regeneration - That a person is saved by baptism;
Worship of images;
Celibacy - Forbidding priests to marry, a further distinction between clergy and laity;
Confessionalism - Where sins are confessed to a priest who then declares absolution f\of those sins;
Purgatory - A place of confinement which is neither Heaven nor Hell, but a place where one has to be refined before going into Heaven,and so sanctification was not complete at death;
Transubstantiation - The concept of the continual and perpetual sacrifice of Jesus;
Indulgences - Where through the giving of money, a persons time in purgatory could be reduced;
Penance - Involving the torment of one's body in order to reduce time in purgatory; and
Mariolatry - The worship of the virgin Mary, her elevation as the mother of God, and the declaration of her deity.
Jezebel in Thyatira is the Roman Catholic Church within Christendom of the Dark Ages.
Thyatira: The Church of the Dark Ages (A.D. 600-1517 - Revelation 2:18-29
In verses 22-23 there is a description of the judgment of Jezebel and that the woman is to be cast in the Great Tribulation.
Unlike the true Church, into which all born again Believers are ingrafted by the Holy Spirit into Christ's Body - (He in us and We in Him) the invisible Church, which (just more than incidentally is an analogy of what the Holy and Sacred Union of marriage between a man and a woman resembles) and this definitely cannot resemble the coupling of woman to woman or male to male for that perverts the truth. It is a perversion.
This means too that in verses 22-23 that, unlike the true Church, the Roman Catholic Church will go into the Great Tribulation and will play a role during that time. She and her children will be cast into the Great Tribulation. The prophecy is very specific. When a woman is used symbolically it symbolizes a religious system or entity.
The exhortation is found in verses 24-25 and this involves those who are not a part of this system.
The Roman Catholic Church must be viewed as Satan's counterfeit and those without are told to hold fast to that which is pure.
They are told to hold fast to the New Testament truth as against the Roman Catholic system. The overcoming one will have a part in the Messianic Kingdom in contrast to the false authority of the Roman Catholic Church.
No speculation is needed to interpret the other figure who is used in the Book of Revelation. In Revelation 22:16 Jesus Himself is declared to be the Morning Star. Thus those who hold fast to the truth will possess Jesus. The possession of the true faith presupposes a possession of the Person of the Messiah.
Christians know that at this time in the history of the Church Age false teachers will abound and Churches will lapse throughout Christendom into apostasy.