So you believe that if He had said that, and it wasn’t true, he would be a lunatic? I don’t. Besides it was recorded by someone else that He said it, years after the fact, wasn’t it? That person could have been mistaken, or prone to embellishment in his writings.
Guess you need to read the book I referenced, course you are so skeptical I’m not sure how much more it will take to convince you. Took me 5 years of Bible study and I was plenty skeptical too. Also to get into Heaven requires complete spiritual perfection therefore Romans 3:23 indicates none of us are worthy, but just like Abram received imputed righteousness for his belief in a future Saviour you can too [see Romans 10:10].
For one I’ll pray for you b/c conversion is a miraculous work of His Holy Spirit.
For two prophecies. Approx 600 unique prophecies that are nowadays referred to as lamb and lion b/c in Jesus day he only fulfilled about 1/3 of them - the sacrificial lamb prophecies. When he returns to set up His Kingdom will be the completion of the lion prophecies. This is also why the majority of the Jewish people continue to reject Him as their Messiah.
Read Psalm 22 describing the crucifixion written at least 800 years before Christ and also before there were any ancient civilizations practiced crucifixion. Normally they would break the legs to hasten or ensure death but in Jesus case they thrust a spear in his side and blood mixed with water flowed heavily indicating a burst heart.
Psalm 22
1My God, my God, why have you forsaken me? Why are you so far from saving me, so far from the words of my groaning? 2 O my God, I cry out by day, but you do not answer, by night, and am not silent. 3 Yet you are enthroned as the Holy One; you are the praise of Israel. 4 In you our fathers put their trust; they trusted and you delivered them. 5 They cried to you and were saved; in you they trusted and were not disappointed. 6 But I am a worm and not a man, scorned by men and despised by the people. 7 All who see me mock me; they hurl insults, shaking their heads: 8 “He trusts in the LORD; let the LORD rescue him. Let him deliver him, since he delights in him.” 9 Yet you brought me out of the womb; you made me trust in you even at my mother’s breast. 10 From birth I was cast upon you; from my mother’s womb you have been my God. 11 Do not be far from me, for trouble is near and there is no one to help. 12 Many bulls surround me; strong bulls of Bashan encircle me. 13 Roaring lions tearing their prey open their mouths wide against me. 14 I am poured out like water, and all my bones are out of joint. My heart has turned to wax; it has melted away within me. 15 My strength is dried up like a potsherd, and my tongue sticks to the roof of my mouth; you lay me in the dust of death. 16 Dogs have surrounded me; a band of evil men has encircled me, they have pierced my hands and my feet. 17 I can count all my bones; people stare and gloat over me. 18 They divide my garments among them and cast lots for my clothing. 19 But you, O LORD, be not far off; O my Strength, come quickly to help me. 20 Deliver my life from the sword, my precious life from the power of the dogs. 21 Rescue me from the mouth of the lions; save me from the horns of the wild oxen. 22 I will declare your name to my brothers; in the congregation I will praise you. 23 You who fear the LORD, praise him! All you descendants of Jacob, honor him! Revere him, all you descendants of Israel! 24 For he has not despised or disdained the suffering of the afflicted one; he has not hidden his face from him but has listened to his cry for help. 25 From you comes the theme of my praise in the great assembly; before those who fear you will I fulfill my vows. 26 The poor will eat and be satisfied; they who seek the LORD will praise him— may your hearts live forever! 27 All the ends of the earth will remember and turn to the LORD, and all the families of the nations will bow down before him, 28 for dominion belongs to the LORD and he rules over the nations. 29 All the rich of the earth will feast and worship; all who go down to the dust will kneel before him— those who cannot keep themselves alive. 30 Posterity will serve him; future generations will be told about the Lord. 31 They will proclaim his righteousness to a people yet unborn— for he has done it.