Why Israelites Are Not Saved? Why They Are Rebellious, Stiff-Necked, And Do Not Jesus?

Why Israelites Are Not Saved? Why They Are Rebellious, Stiff-Necked Nation, And Do Not Follow And Believe in Jesus? John 3:16 For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. Acts 16:30-31 And he brought them out and said, “Sirs, what must I do to be saved?” So they said, “Believe on the Lord Jesus Christ, and you will be saved, you and your household.” Romans 10:9-10 that if you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved. For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation. Proverbs 11:24-25 There is one who scatters, yet increases more; And there is one who withholds more than is right, but it leads to poverty. The generous soul will be made rich, And he who waters will also be watered himself. 1 Timothy 5:18 For the Scripture says, “You shall not muzz