- Betrayal is the most prominent flaw of any apostle. Judas Iscariot displayed this flaw by betraying Jesus for 30 pieces of silver --- the Jewish price for a dead slave. Judas betrayed Jesus by accepting money from the chief priests in exchange for leading a group of Jewish soldiers to Jesus' usual place of rest, the garden of Gethsemane.
- Every apostle, except for John, abandoned Jesus during his capture, trial, flagellation and crucifixion. The disciples were all guilty of cowardice; although Jesus had told them about his future capture and execution, the disciples were still greatly afraid and unwilling to trust God. Jesus predicted on the Mount of Olives that this would happen, by quoting Zechariah 13:7: "Strike the Shepherd that the sheep may be scattered."
- During Jesus' ministry on earth, He performed many signs and miracles. Although the disciples witnessed the vast majority of these signs, they still had problems believing that Jesus Christ was the Son of God. The most notable doubter is the apostle Thomas. Thomas doubted throughout Jesus' entire ministry; even when God raised Jesus from the dead, Thomas still needed more evidence. It wasn't until he felt Jesus' prior wounds, which had been inflicted upon him on the cross, that he fully believed in the Son of God.
- Throughout the four Gospel accounts, the disciples show themselves to be confused and misguided time and time again. An example of this is found in Matthew 16:22-23. This passage describes a conversation between Jesus and Peter, in which Peter rebukes Jesus for predicting his own death. Jesus then harshly rebukes Peter, telling him that he does not have his mind set on the things of God, but on the things of man. It was only after Jesus' death, resurrection and ascension into heaven that the disciples really began to show doctrinal clarity.