QUESTION OF THE HOUR

Where do these Christians get the idea that there's going to be a rapture?  From the word of God in The Holy Bible:

John 14:2-3  In my father's house are many mansions...I go to prepare a place for you. And if I go and prepare a place for you, I will come again, and receive you to myself; that where I am, there you may be also.

1 Thess 4:16-18 For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:  Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.  Therefore comfort one another with these words.

Revelation 1:7 Behold, he cometh with clouds; and every eye shall see him, and they also which pierced him: and all kindreds of the earth shall wail because of him. Even so, Amen.

1 Thess 2:19 For what is our hope, or joy, or crown of rejoicing? Are not even ye in the presence of our Lord Jesus Christ at his coming? 

Rev. 3:10 Because you have kept my word of patient endurance, I will keep you from the hour of trial which is coming on the whole world, to try those who dwell upon the earth.

Luke 21:36 Watch ye therefore, and pray always, that ye may be accounted worthy to escape all these things that shall come to pass, and to stand before the Son of man.