Just want to add to OP
HOW does one believe? Well, repentence means not just a change of mind, but a change of heart. This is towards Jesus. The gospel is always about the person of Jesus, who he is, what he did, and what this means to us. This is the truth. Was anyone else you know died for all of mankind and raised from the dead, was buddha, mahommad, donald trump...? Nope nope and nope.
Recall, when the gospel was told to people in the book of acts, people were 'pricked in the hearts' (the kjv says this), then they asked 'what shall we do?' peter answered 'repent and be baptised everyone of you in the name of Lord Jesus, and you shall recieve the gift of the holy spirit'
elsewhere it says 'love the lord your God with all your heart' and 'they shall find me, if they seek me with all their heart' and 'if you confess with your mouth and believe in your HEART the Lord Jesus, you will be saved!
GOds grace acts on the heart. Which empowers us to do what God wants us to do, whch is have faith in himand do the good works He prepares us to do. But it starts with repentance - a change of heart. he gives us, a NEW heart. A heart for Jesus.
Now Jesus isnt here in the flesh on earth anymore we cant just go up to Jerusalem and see him face to face cos he resides in heaven and we cant get there without faith. But we do have his sure word in the Bible. Thats why we need to trust the Bible that its true. And it is cos 500 saw him, with their own eyes raised from the dead. The whole nation of Israel at the time pretty much knew that he was crucifed and that he rose from the dead. He ascended to heaven 40 days later. At Bethany. All those who followed him saw him taken up in a cloud.
Ok you might be thinking, how can I believe such a story? JEsus said if you dont believe me, look at the works that I do. All the works, the miracles, the healings, pointed toward his Father in heaven, who is our God showing and demonstrsting to us His love. HE still does miracles today. When people believe and pray in the name of Jesus, amazing things happen. people are healed and delivered, they have such peace and joy in their hearts that NOTHING can ever take that away from them. Even though we physically die, the fact that Jesus rose from the dead and opened the door to heaven means we will too.
Talk to other christians about their encounters with the living God. For me, Jesus healed me of a crushing manic depression where I couldnt even live a normal life much less even get up in the morning to face the day. And it was not normal ups downs it was CRAZY up and downs to the point where satan had me down so low that I might as well be a walking zombie. At other times I was so high that nothing could contain me and had to be tranquilised but I was listening to the lies of the devil who was out to curse me and destroy me and tempt me to sin all the time. I lived in absolute fear and was terrified.
He delievered me from that and set me on the stable rock that is His foundation. And after delieverence never had to rely on any medication again cos I was free! GOd showed me He loved me, praise the Lord!