So you are saying that the Roman Catholicism does pagan worship. How about those men after Paul, the Apostle, the early church fathers who followed the footstep of the gospel of Christ? Do you think that there is one who is alive then to propagate the gospel?
Those raised in the Catholic church have no idea how far they have strayed from what Christ taught. The Jews in Jesus day didn't realize how far Judaism had strayed from the form of worship instituted through Moses either. When Jesus came to seek out "the lost sheep of the house of Israel" most of the nation rejected him, because of adhering to their old comfortable ways. Those satisfied with that apostate system of worship, (that had replaced the original) did not come to Christ. They were among those who cried out for Jesus' blood. (Matthew 27:25)
If Christ returned today, and did not support the current system of Christian worship, they would execute him all over again!
The early Church followed the example of their ancient Jewish counterparts, which is what Jesus and his apostles had foretold. Apostates began to infiltrate the church towards the end of the first century, but because the apostles were acting as a 'restraint' until the writing of the Christian scriptures was complete, they did not fully succeed. (2 Thess 2:6, 7)
After the last apostle (John) died, the apostasy gained momentum. Following the Jewish example, humans are inclined to follow other humans with a good argument. The Christian faith was so weakened by these apostates posing as Christian leaders that by the time of Constantine the situation was ripe for the introduction of Roman Catholicism. This "universal" religion was declared to be the only religion of the Roman Empire by an Emperor who himself never became a Christian. He was a worshipper of Zeus till the day he died. When you see some Catholic images of Jesus, he looks remarkably like Zeus.
Constantine's whole agenda in reforming the religion of Rome was not to follow Christianity, but to unite his divided empire by blending the two belief systems that were causing division. Pagan Roman sun worship is as visible in Roman Catholicism today as it was then.
In the following images you can see the strong influence of pagan worship under the guise of Christianity.
Images of the sun...the mitre worn by the Pope....the shape of the wafer....the Babylonian sun wheel in St Peter's square along with the pagan obelisk....Catholic symbolism, etc.
A Google search will give you more if you want to research this for yourself.
Unless you knew what you were looking at, it would probably not be even noticeable.
As Jesus said, the "wheat" were still in existence all this time, but almost choked out by the "weeds" and the power they exerted over the ruling powers of the day. Many from among those early church members were likely of the elect but they would not be identified by their compliance with church skullduggery, but railing against it. The true Christian martyrs are those put to death by the church itself as "heretics".