I think that we can take the bible as being credible. Because if you look at the history of the apostles, those who wrote the new testament, we see them going around spreading the gospel, starting churches, but basically being poor, and poorly treated; we see them being kicked out of synagogues, beaten, and eventually martyred. In fact all of the 12 disciples were martyred. So, if they had been lying on their testimonies they would have died for a lie.
How many people would die for a lie? How many liars would die for their lies? I don’t think any would. Not only that they did not benefit financially from their preaching like we see some TV evangelists today. They were poor. They have no reason to lie because they would not benefit from it. The Jews wanted them dead. The Romans wanted them dead. Wouldn’t it be easier just to pack it in and take up Judaism or Zeus or something than to propagate a lie?
Next we see the first 300 years of Christianity as being filled with martyrs due to the Roman persecutions. Again, would these people die for what they thought was a lie? Most people wouldn’t die to be part of a club or organization of some kind. There is obviously something beyond the natural realm that would possess a person to die for their belief. There must have been something that utterly convinced them that what they believed was true. The only logical conclusion is that what they believed was in fact true.
Example of a prophecy fulfilled:
Take a look at Jesus on the cross - He said, “My God, My God, Why have you forsaken me?”
This is a fulfillment of Psalm 22.
Jesus was quoting the first line of Psalm 22 on the cross to indicate to his disciples that he was the fulfillment of that prophesy.
“Since many have undertaken to compile a narrative of the events that have been fulfilled among us, just as those who were eyewitnesses from the beginning and ministers of the word have handed them down to us, I too have decided, after investigating everything accurately anew, to write it down in an orderly sequence for you, most excellent Theophilus, so that you may realize the certainty of the teachings you have received.”