Matthew 3:1 In those days John the Baptist came preaching in the wilderness of Judea, “Repent, for the kingdom of heaven is at hand.” For this is he who was spoken of by the prophet Isaiah when he said, “The voice of one crying in the wilderness: Prepare the way of the Lord; make his paths straight.’” Now John wore a garment of camel’s hair and a leather belt around his waist, and his food was locusts and wild honey. Then Jerusalem and all Judea and all the region about the Jordan were going out to him, and they were baptized by him in the river Jordan, confessing their sins.
Matthew 4:17 From that time Jesus began to preach, saying, “Repent, for the kingdom of heaven is at hand.”
Matthew 11:20 Then he began to denounce the cities where most of his mighty works had been done, because they did not repent.
Matthew 12:41 The men of Nineveh will rise up at the judgment with this generation and condemn it, for they repented at the preaching of Jonah, and behold, something greater than Jonah is here.
Matthew 21:31-32 Jesus said to them, “Truly, I say to you, the tax collectors and the prostitutes go into the kingdom of God before you. For John came to you in the way of righteousness, and you did not believe him, but the tax collectors and the prostitutes believed him. And even when you saw it, you did not afterward change your minds and believe him.
We can’t come to the kingdom of heaven unless we leave our sin – turn away from it – believe in Jesus Christ and have faith, trust, and reliance in His sacrifice on the cross for our sin. We are born with a basic understanding of God. Rom 1:19 For what can be known about God is plain to them, because God has shown it to them. For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse. For although they knew God, they did not honor him as God or give thanks to him, but they became futile in their thinking, and their foolish hearts were darkened.
We have free will to choose to repent, believe, surrender, serve, follow, and obey Jesus Christ. Every single person is born into sin. We have a sinful nature. Try as hard as we might we will never be able to cleanse ourselves of this sin stain. We can try to be good and do right, but all of our efforts apart from Jesus Christ fall short and do nothing to make us right before God. The Judgment for sin is eternal torment in Hell. Without repentance from sin and faith in and obedience to Jesus Christ our destination is eternal hell.
The light of the Gospel is life to the lost. It gives them hope and faith in eternal heaven. Those, who’s have seen and securely taken hold of the light of the Gospel of Jesus Christ (believed in, trusted, rely on, cling to and repent). I am at a loss for words that can explain how the conversion, new birth, takes place upon repenting and believing in Jesus Christ. Therefore, if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come. We are born again and the eyes to our hearts and minds are opened and we see right and wrong, good and bad, love and hate, peace and fear, mercy and anger ……. We see it through the Gospel of Jesus Christ. Heaven and Hell await the free will choice that each and every person makes this side of eternity.