Do Jews have to find Jesus?What do they have to do to be saved in the end times and or when they die?
Traditional Christian teaching is that Jesus Christ is the Savior of the whole world, that means there is no salvation apart from Him and what He accomplished. That is to say, it is through Christ by which God saves, is saving, will save, and reconciles the world to Himself.
The covenant God made with the Israelites at Sinai contained no promise of eternal life, salvation, rescue from sin and death, etc. It was a national covenant which in Christian understanding points, ultimately, to Jesus. From a Christian understanding all of God's covenant promises point to Christ as Christ is the center of all things.
In St. Paul's epistle to the Romans he writes of the universal problem of sin, "All have sinned" he writes; the reality of sin and death is common to all human beings both Jews and Gentiles; and salvation is for both Jews and Gentiles and that is found in Christ by the mercy of God which He has on all, through faith. Because it is only in and by Christ that there is salvation it is therefore trust in Christ which is the way by which God takes us and brings the objective reality of what Christ has done for the whole world and connects it to us as individuals. So whether Jew or Gentile all have sinned, all die, and Christ is the Savior of all both Jew and Gentile having destroyed the power of death, conquered sin, and delivers the whole human race, indeed the whole of creation to the peace and hope of God. That God is, and indeed will, restore all things, the whole of creation being made brand new, and we with God forever in that future and unending age.
It's not about what "tribe" you belong to. It's about what God has done in actual, real historical space-time through the death and resurrection of Jesus which is for the whole world.
-CryptoLutheran