Muhammad knew very well the messsge of the early Christians and rejected it. He also borrowed from the early Christain and Hebrew texts trying to get followers from both groups. I personally believe the leadership and majprity of the Roman Catholic Church will not be included in the Rapture of Jesus' Church as it will help usher in the Anti-Christ, one world religion, and the Tribulation. If you read all the Papul Bulls, and Catholic Ecumenical Council Meeting Minutes to the present day Jesus Chrsit's role as "no one comes to the father but by me" (
John 14:6) in Salvation has been cut out of the Roman Catholic Church's doctrine. Don't beleive me, check it out for yourself!
Matthew 7:21-23
New American Standard Bible
21 “Not everyone who says to Me, ‘Lord, Lord,’ will enter the kingdom of heaven, but the one who does the will of My Father who is in heaven
will enter. 22 Many will say to Me on that day, ‘Lord, Lord, did we not prophesy in Your name, and in Your name cast out demons, and in Your name perform many [
a]miracles?’ 23 And then I will declare to them, ‘I never knew you; leave Me, you who practice lawlessness.’