Will everybody in heaven be Catholic?
ANSWER!
Yes, there is nobody in heaven except Catholics. I did not say only Catholics go to heaven – do you see the difference. What is heaven? Heaven is saying God face to face as He is. Since God is all truth there can be no division in heaven. This is why for 2000 years the Church in heaven is called ‘the Church Triumphant.’ So can somebody on earth that isn’t Catholic but strives for holiness (cf. Hebrews 12:14) by following the natural law that God placed in their hearts (cf. Romans 2:15) to the best of their ability, they fear God and they do what is right and acceptable to him (cf. Acts 10:34). If the person was given the fullness of truth in their intellect they would desire baptism - Questions and Answers | The Vortex (churchmilitant.com).
CCC 1260 "Since Christ died for all, and since all men are in fact called to one and the same destiny, which is divine, we must hold that the Holy Spirit offers to all the possibility of being made partakers, in a way known to God, of the Paschal mystery. Every man who is ignorant of the Gospel of Christ and of his Church, but seeks the truth and does the will of God in accordance with his understanding of it, can be saved. It may be supposed that such persons would have desired Baptism explicitly if they had known its necessity.”
Moses for example is in heaven without baptism. But he is heaven in the fullness that God desires for him to be in so he is in heaven in the Church Triumphant. The Church is Christ, on earth we are the Church militant, in purgatory it’s the Church suffering, in heaven it’s called the Church triumphant. The Catholic Church exist in all these 3 levels where Christ our King, Our Lady as the Queen, the 12 apostles sitting on thrones as well along with the celestial court of angels and saint around Gods throne. There is no division in heaven, no denominations, no Jew or Gentile, all the saints are part of the One Holy Catholic & Apostolic Church made spotless, immaculate and perfected in heaven. Everybody in heaven will see the fullness of the truth in its everlasting glory and everyone will be united to the Church Triumphant. Everybody in the Church triumphant will be a Catholic Christian because they will be perfectly united to the Church Triumphant as members and they will behold the face of God in all His eternal glory. Our conversion comes in 3 stages, the purgative, the illuminative and the unitive stage. Our entrance into heaven starts in the Church militant, than we die and are purified in the Church suffering and when our soul is perfected in grace than we enter into the Church Triumphant. Any non-Catholic who is in heaven will not be in heaven because of their religion (Islam, Judaism, Hinduism, Mormonism etc), they will be in heaven despite their religion because although salvation begins with the sacrament of baptism, “God has bound salvation to the sacrament of Baptism, but he himself is not bound by his sacraments” (CCC 1257). God can save the non-Catholic person of good will. In Luke 2:14 it literally reads in greek like this: “Glory in the highest to God and on earth peace among men with whom He is pleased.” Notice, none of these shepherds were baptized, there was no Church yet, but God was pleased with these Jewish shepherds because “they feared God and did what was right and acceptable to God” (Acts 10:34).