Is there salvation outside of Jesus Christ?
(Acts 4:10-12 [KJV])  Be it known unto you all, and to all the people of Israel, that by the name of Jesus Christ of Nazareth, whom ye crucified, whom God raised from the dead, even by him doth this man stand here before you whole.  This is the stone which was set at nought of you builders, which is become the head of the corner.  Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.
There is no salvation in any other name than Jesus Christ, but things will happen in the last days.
(Romans 11:25-26 [KJV])  For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.  And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
Now who are all Israel. I believe that the people that are today called the ethnic Jews are just the tribe of Judah and Levi. So there are 10 more tribes that are Israel. Who are these ten tribes. It is possible that they and ethnic Jews living outside of Israel are going to return to greater Israel in the end times. This could be in the Second exodus.
Ezekiel 20:34 KJV  And I will bring you out from the people, and will gather you out of the countries wherein ye are scattered, with a mighty hand, and with a stretched out arm, and with fury poured out.
So it is possible that there will be a great battle and after that Greater Israel will be formed and then there will be a Second exodus and Jews, the lost ten tribes and believers in the Lord Jesus Christ will return to greater Israel and then the beast system will be on the nations but not on greater Israel.
So there might be a lot of people that will seem to be lost and not believers in the lord Jesus Christ that will eventually be saved.
(Zechariah 12:10 [KJV]) And I will pour upon the house of David, and upon the inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon me whom they have pierced, and they shall mourn for him, as one mourneth for his only son, and shall be in bitterness for him, as one that is in bitterness for his firstborn.
Though I haven't sorted this out yet. It seems they have to arrive in Israel before Zech 12:10 to receive the spirit of grace this way. Also it seems to only be upon the inhabitants of Jerusalem and David not on the entire greater israel.
But what will happen to the ethnic Jews (tribe of Levi and tribe of Judah) and the ten lost tribes that have lived during the New Testament era and died. It is possible that also these shall be saved in the end times and that that is talked about in the prophecy of the dry bones.
Thanks to Moshe for ideas regarding the end times.
- Moshe, Israel Bible Prophecy News Analysis & Ezekiel Temple Watch, https://www.youtube.com/user/EndTimesUSAisBabylon