John 4:22 ASV
(22) Ye worship that which ye know not: we worship that which we know; for salvation is from the Jews.
Galatians 2:14 ASV
(14) But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Cephas before them all, If thou, being a Jew, livest as do the Gentiles, and not as do the Jews, how compellest thou the Gentiles to live as do the Jews?
Hebrews 12:14 ASV
(14) Follow after peace with all men, and the sanctification without which no man shall see the Lord:
1 Peter 1:15-16 ASV
(15) but like as he who called you is holy, be ye yourselves also holy in all manner of living;
(16) because it is written, Ye shall be holy; for I am holy.
John 8:24 LITV
(24) Therefore, I said to you that you will die in your sins. For if you do not believe that I AM, you will die in your sins.
Romans 10:9-11 ASV
(9) because if thou shalt confess with thy mouth Jesus as Lord, and shalt believe in thy heart that God raised him from the dead, thou shalt be saved:
(10) for with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
(11) For the scripture saith, Whosoever believeth on him shall not be put to shame.
Insight on the difficult salvation of Jesus through the lenses of the parable of the narrow gate
We can read a great insight on the salvation of Jesus by studying His parable of the narrow gate (not narrow door) in Luke 13:22-30.
Jesus spoke about the difficulty to enter the Kingdom of God upon the question from someone asking if it is a few who are saved. As usual, Jesus did not give a straight answer to the question.
He started by telling His audience that they must strive, wrestle, fight, contend to enter the Kingdom of heavens. In other words, it takes our own personal efforts to enter the Kingdome, contrary to the belief that no one can be saved by their own efforts.
Not being saved by our own efforts comes from a misunderstanding of the concept of salvation in the Scriptures.
The truth about the salvation of the Jews is that, according to Apostle Paul, salvation had been decided long time ago, before times eternal, before our creation, before we did either good or evil, as an unmerited gift. Based on that revelation from Apostle Paul, we can affirm that everyone who is born on earth has been predestined to salvation. Except that we must believe in Jesus, be born again and strive or fight to overcome in order to claim that free salvation.
While we must wrestle to enter the Kingdom, Jesus added that many will try but will not be able (Luke 13:24) because many are called but few are chosen (Matthew 22:14).
Luke 13:24 teaches that we will not get help to enter through the narrow gate because we must prove that we can get in without a little push from Heaven because many will not enter even when they try. Fortunately, the parable gives the reason why many will not be able to enter the kingdom.
In Luke 13:25, we see the Master of the house getting up, not to go help out, but to just shut the door of the house, not the narrow gate!
Picture in our mind that the narrow gate gives access to the house but, still, we must get through the door of the house. We can see people making it inside of the house while others are still not getting inside, even though they made it through the narrow gate. For, the Master of the house did not get up to help out, nor to close the narrow gate, but to close the door of the house.
We understand that because there are those who are earnestly knocking on the closed door of the house, not knocking on the narrow gate.
The Master of the house is not moved by the pleading of those outside who cannot believe that they are locked out.
The Master of the house just keeps reminding them that He does not know where they come from, even though they were certain that they ate and drank before Jesus and heard His teachings in their streets. What is to make of their disappointment? Why does the Master close the door on them when the time comes.