For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
James Kraft
There will be a remnant of Israel saved during the tribulation. As a nation they rejected Jesus as their messiah.
Revelation 7. There will be 12,000 from each tribe saved. 144,000 Jews and so many Gentiles that no man can number.
Salvation by grace through faith in Jesus is for the whole world. First John 2:2. God is not willing that any should perish, but that all would believe on Jesus for the free gift of eternal life.
First Timothy 2:4. The Jews would not repent, change their mind, metanoia, and accept Jesus as their messiah.
But God cannot go back on His promise to the Jewish nation. And there will be a remnant of 144,000 saved during the 7 year tribulation period.
God can not go back on His promise to us saved by grace. John 6:47. First John 2:2. John 3:18.Romans 11:6.
Romans 6:23 For the penalty of sin is death, but the GIFT of God is eternal life, through Jesus Christ our Lord.
A gift is paid for in full in advance of the GIFT. A reward is something you earn or work for. A gift is paid in full. John 3:18
First Corinthians 15:3-4. John 10:28-29. Gods promise to all those who accept His free gift of eternal life.
First John 5:13 These things have I written unto you that BELIEVE on the name of the Son of God, that ye may KNOW YE HAVE ETERNAL LIFE.