Jesus the last prophet?

Matthew 24:34 King James Version (KJV)

Verily I say unto you, This generation shall not pass, till all these things be fulfilled.

Those  phrases doesnt talk about Jesus fullfilling his purpose (teaches or the cruxifiction) but all the things that's gonna be the sign when the world near to the end and he was part of the sign. Refer to:http://monotheistian.blogspot.my/2017/09/the-second-coming-of-jesus.html

1 Thessalonians 4:15-17 Revised Standard Version (RSV)

15 For this we declare to you by the word of the Lord, that we who are alive, who are left until the coming of the Lord, shall not precede those who have fallen asleep. 

16 For the Lord himself will descend from heaven with a cry of command, with the archangel’s call, and with the sound of the trumpet of God. And the dead in Christ will rise first; 

17 then we who are alive, who are left, shall be caught up together with them in the clouds to meet the Lord in the air; and so we shall always be with the Lord.

1 Corinthians 15:51-53 King James Version (KJV)

51 Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed,

52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.

53 For this corruptible must put on incorruption, and this mortal must put on immortality.