Assalamualaikum,
So everyone wants to see where it says that Jesus is not dead and he'll come back, or at least how we can come to such a conclusion.
Well here's my explanation:
An interpretation of the verse stated by Jewels is the following:
"Muhammad is naught but a prophet. all prophets before him have passed away. If he should die or is slain, will you turn about on your heals?"
Other interpretations of the exact same verse, provided by Br Mudassar are the following:
"3:144 Muhammad is no more than an Apostle: many were the Apostles that passed away before him. If he died or were slain will ye then turn back on your heels? If any did turn back on his heels not the least harm will he do to Allah; but Allah (on the other hand) will swiftly reward those who (serve him) with gratitude." TMQ by Yusuf Ali
and:
"3:144 Muhammad is but a messenger, messengers (the like of whom) have passed away before him. Will it be that, when he dieth or is slain, ye will turn back on your heels? He who turneth back doth no hurt to Allah, and Allah will reward the thankful." TMQ by Pickthall.
Now here are verses provided by Br. Abdullah:
"43.061
And (Jesus) shall be a Sign (for the coming of) the Hour (of Judgment): therefore have no doubt about the (Hour), but follow ye Me: this is a Straight Way.
4.157
That they said (in boast), "We killed Christ Jesus the son of Mary, the Messenger of Allah";- but they killed him not, nor crucified him, but so it was made to appear to them, and those who differ therein are full of doubts, with no (certain) knowledge, but only conjecture to follow, for of a
surety they killed him not:-
4.158
Nay, Allah raised him up unto Himself; and Allah is Exalted in Power, Wise;-
4.159
And there is none of the People of the Book but must believe in him before his death; and on theDay of Judgment he will be a witness against them;-
3.055
Behold! Allah said: "O Jesus! I will take thee and raise thee to Myself and clear thee (of the falsehoods) of those who blaspheme; I will make those who follow thee superior to those who reject faith, to the Day of Resurrection: Then shall ye all return unto me, and I will judge between you of the matters wherein ye dispute.
Now if we examine the verse 43.061, provided by Br. Abdulla, and the verse provided to us by Jewels, if we take Jewels' interpretation, then there would be a contradiction. Although we disagree on many things, we all agree on the fact that there are no contradictions in the Quran.
Now let's compare the interpretation provided by Br. Mudassar and the same verse provided by Br. Abdulla. If we compare these two verses, there is no contradiction, so we can conclude that the interpretation of the verse 3:144 from Br. Mudassar has to be more accurate, since it avoids causing a contradiction which is caused by the interpretation provided by Jewels.
This is how the Ayat 3:144 does not confirm the death of Jesus.
May Allah guide us all.