The credibility of the apostles is questioned even in the Bible itself. In the Bible, Jesus very sharply criticizes the apostles as spiritual weaklings. Christians, of course, do not take this seriously, but I would not underestimate this fact. Of course: the church has its own interpretations for everything. Jesus saw not only certain flaws in the apostles, but was completely dissatisfied with them and considered them completely unfit and incapable of spreading his teachings. The fact that the apostles were not at all devoted to Jesus is also confirmed by the fact that at the crucifixion they were all completely cowardly and hid. Peter denied him. The text of the Bible also does not support the violent church interpretation of the Bible that only the apostle John stood under the cross. Even after the crucifixion, they were very cowardly and were locked in one house in silence and fear – so they were completely cowardly, instead of devotedly spreading Jesus' teaching. Christians imagine the apostles as some idealistic people who honestly took over Jesus' teaching and passed it on, but the opposite is true, the Bible itself speaks of the opposite. Later, the apostles founded the church, but it is also questionable with what devotion they spread Jesus' teaching – certainly very dishonestly and carelessly, and certainly they did not honestly oversee its authenticity. The apostle Paul was much more active later. The Bible itself contradicts itself: on the one hand, it describes the apostles as total impossible worthless cowards, and on the other hand, the Bible says that Jesus entrusts the apostles with founding the church. If we took the first page more seriously, then the very existence of the church would be questioned in the Bible itself.
The Gospel according to Luke – chapter 9 53 But they did not receive him, because he was heading for Jerusalem. 54 When the disciples James and John saw this, they said, "Lord, shall we tell fire to come down from heaven and consume them?" 55 But he turned and rebuked them. 56 And they went to another village.
The Gospel according to Matthew – Chapter 16 8 But Jesus knew it and said, "You of little faith, why are you discussing among yourselves that you have no bread? 9 Do you not yet understand, nor remember the five loaves for the five thousand people, and how many baskets you gathered?"
The Gospel according to Matthew – Chapter 15 15 Peter said to him, "Explain this parable to us." 16 He replied, "Don't you understand yet?"
The Gospel according to Matthew – Chapter 6 30 If God clothes the grass of the field in such splendor, even though it is here today and tomorrow is thrown into the furnace, will he not much more clothe you—you of little faith?!
The Gospel according to Matthew – Chapter 8 26 He said to them, "Why are you afraid, you of little faith?" Then he got up and rebuked the wind and the sea, and there was a great calm.
The Gospel according to Matthew – Chapter 14 31 Jesus immediately reached out his hand, caught him and said to him, "You of little faith, why did you doubt?"
In conclusion: Christianity, the Bible, and the apostles are far from being the idealistic, beautiful, and harmonious fairy tale that Christians imagine them to be. The apostles themselves became indirect enemies of Jesus due to their cowardice. One could also seriously doubt the credibility of the Bible regarding the authenticity of miracles and the healing of the sick by the apostles in the early church. Many things simply might not have been true.