Then according to your explanation, Jesus death does not do any good, unless we believe and act.
According to Jesus’ explanation we have to believe and act.
It is he who is our judge and it is he who who tells us that he judges our actions. By that criteria he separates the “sheep” from the “goats”.
It will not matter how we judge ourselves because, we can have a very mistaken view of who we are and what we do. His words at the judgment are unexpected and devastating to the “many” standing before him, pleading their case....
Matthew 7:21-23....
“Not everyone saying to me, ‘Lord, Lord,’ will enter into the Kingdom of the heavens, but only the one doing the will of my Father who is in the heavens will. 22 Many will say to me in that day: ‘Lord, Lord, did we not prophesy in your name, and expel demons in your name, and perform many powerful works in your name?’ 23 And then I will declare to them: ‘I never knew you! Get away from me, you workers of lawlessness!’”
Imagine being on the receiving end of that judgment!
Just acknowledging Jesus as ”Lord”, even if you have mistakenly believed that some ‘powerful works’ performed among your ranks were evidence of the holy spirit.....no! Jesus says that these had nothing to do with him. He tells them that he “NEVER knew” these ones....IOW he has NEVER recognised them as his own. So who is the god receiving their worship? There is only one other “god “ who wants it, and has gained it by deception.
Then what is the difference between Jesus coming, and Prophets before Him?
Why did Jesus send his prophets to Israel in the first place?
It was to correct their disobedience to his commands. This nation were serial covenant breakers, but God kept them as his people even through the worst breaches of his Law, because he didn’t break his part in that covenant. He produced their Messiah, right on time, but by that time, Israel was beyond redemption....they were irreformable.
Jesus lamented.....Matthew 23:37-39...
“Jerusalem, Jerusalem, the killer of the prophets and stoner of those sent to her—how often I wanted to gather your children together the way a hen gathers her chicks under her wings! But you did not want it. 38 Look! Your house is abandoned to you. 39 For I say to you, you will by no means see me from now until you say, ‘Blessed is the one who comes in Jehovah’s name!’”
Those who murdered the prophets who were sent to correct them, were simply doing it again by orchestrating the murder of Jesus on trumped up charges. For the Jewish nation that meant that God, having fulfilled his covenant, “abandoned” them....after leading the “lost sheep” out of that corrupt religious system.....
“Symʹe·on has related thoroughly how God for the first time turned his attention to the nations to take out of them a people for his name.” (Acts 15:14)
This is when God began inviting Gentiles to join the Jewish remnant who accepted Jesus as Messiah.
Before Jesus, also, If someone believed in God, and did good actions, he/she would have gone to heaven.
Where in all of the Hebrew Scriptures did God ever tell the Jews that they would go to heaven? The ancient Jews never expected such a thing. Their belief (according to their scripture) was in a resurrection, (being physically raised from the dead) which became twisted by those who came later into belief in the immortality of the soul (adopted from Greek Platonism, not the Bible) There was never a teaching of spirit life after death in original Jewish belief. The Jews were never offered a “heaven or hell” scenario....they were only ever offered “life or death”. (Deuteronomy 30:19)
Before Jesus paid the redemption price for fallen humanity, there was no scriptural mention of going to heaven. Jesus opened up that possibility by referring to God’s Kingdom (that the Jews were expecting) as ruling from heaven over the earth. (Revelation 21:2-4)
Before Jesus, only Israel had the means to have their sins forgiven through sacrifices offered according to the Law. No one else was subject to that Law but them. Why were Gentiles not subject to those laws? Because all who died went to the same place.....the grave. Resurrection, for the majority, is a return to physical life when Jesus calls all the dead from their graves. (John 5:28-29) Both the ‘righteous and the unrighteous’ are raised to life under the rulership of the long awaited Kingdom.
God’s Kingdom will rule from heaven with a number of “chosen ones” taken to heaven to assist Jesus in bringing the blessings of that kingdom to redeemed mankind. (Revelation 20:6, Revelation 14:1-4) As appointed ‘kings and priests’ these heavenly rulers will usher in God’s rulership over this earth, returning humankind to the conditions that God gave them at the beginning. (Isaiah 55:11) Everlasting life in Paradise.
The Bible is one story from Genesis to Revelation. What we lost in the beginning is restored at the end.
That is how we understand the Bible’s message.