For example, in this passage, we read the following:
And while they were gazing into heaven as he went, behold, two men stood by them in white robes, and said, "Men of Galilee, why do you stand looking into heaven? This Jesus, who was taken up from you into heaven, will come in the same way as you saw him go into heaven." Acts 1:10-11What they said about Jesus returning like that applies to some time in the future, not the Apostles own day back then.
Of course, there have been false teachers ever since the time of Christ (Judas, Rastifarians, Zoroastrians, "Elsie's Yoga", etc.), and there are many today. When you read with just a little more precision and understanding, you will see that I did not say "Exclusively Protestants", I just said "Protestants".
HMMMmmm...
I guess the church of Rome has learned this; too?
Quite true; but referring to a time when NONE existed.